JP4121996B2 - Load control device - Google Patents

Description

  The present invention relates to a device for controlling the rotational speed, brightness, blinking time, etc. of a load such as an AC or DC fan, electric lamp, motor, etc., and more particularly, individually for various AC and DC loads. In particular, the present invention relates to a load control device capable of easily adjusting a load voltage and a blinking time.

  The flashing and on / off mentioned below have the same meaning and are used together for convenience of explanation.

  In a normal fan motor control device, the operation blinking time is controlled using a 24-hour contact timer, and the motor speed is controlled using an AC load transformer or the like. More specifically, the blinking time is controlled by adjusting the on and off times of the power supply to the load using a timer, and by adjusting the AC voltage by changing the variable resistance value of the AC load transformer. The rotation speed is controlled.

  However, since the minimum setting time of a contact type timer that is generally used is 10 minutes to 15 minutes or less, the time setting is limited, and when the load type is different, the voltage band that can be adjusted by the AC load transformer is different. Therefore, there is a problem that it must be replaced with a variable resistor suitable for the type of load. It is difficult for a general user to replace the variable resistor built in the component state.

  As another configuration, a DC load transformer is used to control the rotational speed of the DC fan motor. In a DC load transformer using a down transformer (Transformer) and a DC rectifier circuit, a user can obtain a necessary DC voltage by changing a secondary side tap of the down transformer. However, in this case, since only a preset voltage (for example, 0V, 6V, 9V, 12V) can be selected, the user cannot finely adjust the DC voltage applied to the load. There is.

  As another example of a fan motor control device that transforms an AC voltage to generate a load driving AC or DC voltage, Slidacs is used to adjust the load driving AC voltage. In this case, the user can change the position of the coil contact to make the required voltage variable, but when applied to a large load, the load capacity of the slider must be increased. The overall weight of the control device increases due to the increased weight of the iron core.

  As another configuration, a DC load transformer including a voltage regulator, a down transformer, and a rectifier circuit is used. The secondary side of the down transformer is fixed to the maximum output voltage tap, and the primary side voltage of the down transformer is controlled by the voltage adjusting unit. The user can generate a necessary DC voltage by adjusting the variable resistance value of the voltage adjusting unit. However, when a DC fan is connected to the load side, there is a problem that the load does not start if the initial voltage is supplied lower than the minimum supply voltage of the DC fan. The DC fan has the advantage of rotating at a very low speed within the startable range even if a voltage lower than the minimum specification is supplied, but in this structure, if a separate control circuit for starting is not added, Since initial driving is not performed at a low voltage, various applications are impossible even if fine voltage adjustment is realized by combining various methods.

  An object of the present invention is to provide a load control device capable of easily adjusting a load voltage and a load blinking time for various AC and DC loads.

  Another object of the present invention is that the user can easily adjust the rotational speed of the AC and DC loads by changing the variable resistance value and adjusting the AC voltage and DC voltage to a desired band. An object of the present invention is to provide a load control device that can be applied to various AC and DC loads.

  Another object of the present invention is to provide a load control device that can be activated even at a low voltage while finely adjusting the voltage applied to the load.

  Furthermore, another object of the present invention is to provide a load control device capable of individually adjusting the on and off times without falling into an oscillation stop state.

In order to achieve the above object, the present invention outputs a voltage for driving a plurality of DC loads upon receiving an AC power supply, and adjusts the transformation bandwidth so as to adapt to the plurality of DC loads. A DC load transformer that is capable of outputting a signal having a length of on-time and off-time by the first and second timer integrated circuits , respectively , and the first timer integrated circuit and the second timer integrated circuit alternately A main on / off adjusting unit capable of individually adjusting the lengths of the on time and off time by oscillating while being reset , and an output signal of the main on / off adjusting unit by the third and fourth timer integrated circuits and the on-time and off-time with different periods length of the signal was output respectively, while the third timer integrated circuit and the fourth timer integrated circuit is reset alternately By vibration, the the sub-off adjusting unit capable of adjusting the length of on-time and off-time, during the initial activation of the plurality of DC loads, input from the main on-off adjusting unit and the sub-off adjusting unit An activation unit that outputs an initial activation signal that causes a maximum voltage to be applied to the plurality of DC loads according to a signal that is received, and the DC load that depends on output signals of the main on / off adjustment unit and the sub on / off adjustment unit voltage supplied from the transformer is to be supplied to said multiple sets of DC loads, the initial starting voltage to the plurality of DC loads in accordance with a signal supplied from the starting unit upon initial activation of the plurality of DC loads And a relay contact portion to be supplied.

Further, outputs a voltage for driving AC load receives supply of said AC power source, it further includes a capable AC load transformer to adjust the transformer bandwidth to conform to the AC load It is characterized by.

  The transformer bandwidth is adjusted by a built-in semi-fixed variable resistor, and the shaft of the semi-fixed variable resistor is attached to the outside of the case.

  The DC load transformer includes: a voltage adjusting unit capable of adjusting a transformation bandwidth of the AC power source; a transformer having a primary side connected to output terminals of the AC power source and the power source adjusting unit; And a rectifier circuit that outputs a voltage for driving the DC load by changing the secondary side voltage to DC.

Said main on-off adjusting portion includes a first timer integrated circuit, the discharge terminal of the first timer integrated circuit, coupled to the threshold terminal and a trigger terminal, the first to provide a time constant for the length of the on-time A capacitor, a first variable resistor, a first transistor that operates in response to an output signal of the first timer integrated circuit, a relay in which a coil is connected between a power supply voltage and the first transistor, and the first transistor And a second capacitor connected to a discharge terminal, a threshold terminal and a trigger terminal of the second timer integrated circuit to provide a time constant for the length of the off time. and a second variable resistor, and operates in response to an output signal of the second timer integrated circuit, a reset of the first timer integrated circuit Characterized in that it comprises a second transistor for outputting a signal for.

The sub-off adjusting unit, said third timer integrated circuit, the discharge terminal of the third timer integrated circuit, coupled to the threshold terminal and a trigger terminal, a third to provide a time constant for the length of the on-time A capacitor, a third variable resistor, a third transistor that operates in response to an output signal of the third timer integrated circuit, a relay having a coil connected between a power supply voltage and the third transistor, and the third transistor fourth capacitor providing said fourth timer integrated circuit which is reset by the output of the discharge terminal of the fourth timer integrated circuit, coupled to the threshold terminal and a trigger terminal, the time constant for the length of the off time and a fourth variable resistor, operates in response to an output signal of said fourth timer integrated circuit, a reset of the third timer integrated circuit Characterized in that it comprises a fourth transistor for outputting a signal for.

The activation unit via the trigger terminal, and a fifth timer integrated circuit for receiving an input of a signal supplied from the first timer integrated circuit of the main on-off control unit comprises a discharge terminal of said fifth timer integrated circuit and A fifth capacitor and a fifth variable resistor connected to the threshold terminal and providing a time constant for an on-time length; a fifth transistor operating in response to an output signal of the fifth timer integrated circuit; and a power supply voltage. wherein a fifth relay coil is connected between the fifth transistor via a trigger pin, the sixth timer for receiving an input of a signal supplied from the second timer integrated circuit of the main on-off regulation unit and 6 Capacity to provide an integrated circuit, the sixth is connected to the discharge terminal and the threshold terminal of the timer integrated circuit, the time constant for the length of the on-time And a sixth variable resistor, comprising a sixth relay coil is connected between the sixth transistor which operates in response to an output signal of the sixth timer integrated circuit, a power supply voltage and the sixth transistor It is characterized by being.

  In the load control device according to the present invention, the user can easily adjust the rotation speed or brightness of the AC and DC loads by changing the variable resistance value and adjusting the AC voltage and the DC voltage to a desired band. And can be easily applied to various AC and DC loads.

  In addition, a large number of AC and DC loads can be individually driven by a main on / off controller and a sub on / off controller operating at different periods so that a high voltage is applied for an arbitrary time at the initial start of the load. Thus, the load can operate stably without an oscillation stop phenomenon. That is, a load that does not start with a low voltage can be stably operated.

  Since the load control device according to the present invention can arbitrarily adjust the voltage applied to the load and the blinking cycle and can drive various loads, the brightness and blinking control of AC and DC lamps, It can be applied to wind speed and air volume control of AC and DC fans, or various controls in which the voltage is variable and the blinking time must be adjusted.

  Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. The following embodiments are provided in order for those who have ordinary knowledge in the technical field to fully understand the present invention, and can be modified in various forms to limit the present invention. is not.

  FIG. 1 is a block diagram for explaining a load control apparatus according to a preferred embodiment of the present invention.

  The AC load transformer 110 includes a broadband voltage regulator 111 and a voltage regulator 112 for adjusting a voltage band. The AC load transformer 110 transforms an AC voltage from 0V to an AC input voltage (for example, 100V or 220V) to drive the AC load 150. As the AC load 150, an AC fan, an electric lamp, an AC motor, or the like can be applied. After the user changes the semi-fixed variable resistor VR2 of the broadband voltage adjusting unit 111 and adjusts the transformation bandwidth to match the type of load, the user adjusts the variable resistor VR1 of the voltage adjusting unit 112 to transform the AC voltage. By doing so, the rotation speed of the AC fan, AC motor or the lamp connected to the load side is adjusted.

  The DC load transformer 120 includes a broadband voltage regulator 121, a voltage regulator 122, a down transformer 123, and a DC rectifier circuit 124 for regulating the voltage band. The DC load transformer 120 transforms the AC voltage from 0V to the secondary side voltage (for example, 12V) of the transformer 123, and then rectifies the voltage to a DC voltage to provide four channels (CH1 to CH4) of DC loads 151, 152, 153. , 154 is driven. As the DC loads 151, 152, 153, 154, DC fans, electric lamps, DC motors, etc. can be applied. After the user changes the semi-fixed variable resistor VR2 of the broadband voltage adjusting unit 121 and adjusts the DC transformer bandwidth to match the type of load, the user adjusts the semi-fixed variable resistor VR1 of the voltage adjusting unit 122 to change the transformer. 123, the primary side voltage of the transformer 123 is transformed, and the secondary side voltage of the transformer 123 is output as a DC voltage through the DC rectifier circuit 124, so that the DC fan connected to the load side, the rotational speed of the DC motor, or the lamp The brightness is adjusted.

  The load blinking controller 130 includes a power supply unit 131 that supplies operating power, and a main on / off adjustment unit 132 and a sub on / off adjustment unit 133 that output voltage signals having different periods. The signal output from the adjustment unit 133 is input to the activation unit 134 that controls the initial drive voltage of the DC load.

  In response to the output of the load blinking controller 130, the contacts Relay1, Relay2,..., Relay7 of the relay contact unit 140 operate, and the contacts Relay1, Relay2,. . . , Relay 7 selectively supplies the output voltages of the AC load transformer 110 and the DC load transformer 120 to the 1-channel AC load 150 and the 4-channel DC loads 151, 152, 153, and 154.

  The power supply 131 of the load blinking controller 130 rectifies the input AC voltage into a DC voltage and provides an operating power supply. The main on / off adjusting unit 132 and the sub on / off adjusting unit 133 operate the coil of the relay contact unit 140 that controls the blinking time of the DC loads 151, 152, 153, and 154. In order to prevent the DC loads 151, 152, 153, and 154 from being initially started at a low voltage, the starting unit 134 is a coil of the relay contact unit 140 so that the maximum voltage is applied to the corresponding load at the beginning of the on-time. To work.

  Next, each part of the AC load transformer 110 and the DC load transformer 120 will be described in more detail.

  FIG. 2 a is a circuit diagram for explaining an embodiment of the AC load transformer 110.

  Capacitors C1, C2, and C3 are connected in parallel to an input terminal that receives supply of an AC power supply voltage (for example, 220V) according to the operation of the switch SW, and a resistor R1 and a variable resistor are connected between the capacitors C1, C2, and C3 and the output terminal. VR1 and resistor R2, diac DIAC and triac TRIAC are connected in parallel to each other. A basic variable resistor VR is connected between the capacitors C1 and C2, and a resistor R3 is connected between the capacitors C2 and C3.

  As shown in FIG. 2B, the shaft (adjustment knob) 114 of the variable resistor VR1 is attached to the outside of the case 113 so that the voltage applied to the AC load can be easily adjusted outside. At this time, the protective resistor R2 is connected in series with the variable resistor VR1 to prevent an overcurrent from flowing to the triac TRIAC.

  Generally, when the type of load changes, the voltage band changes, so it must be replaced with a variable resistance value suitable for the type of load. Since the variable resistor VR1 is also built in as a component, it is difficult for the user to easily replace it.

  FIG. 3 a is a circuit diagram for explaining another embodiment of the AC load transformer 110. In order to eliminate the above-mentioned drawbacks, the user can easily adjust the voltage band.

  In the AC load transformer 110 of FIG. 3A, basically, a broadband voltage regulator 111 including a protective resistor Rx and a semi-fixed variable resistor VR2 connected in series is added to the AC load transformer 110 of FIG. 2A. The protection resistor Rx and the semi-fixed variable resistor VR2 connected in series are added in parallel to the variable resistor VR1 and the protection resistor R2. At this time, as another method, the semi-fixed variable resistor VR2 can be connected in parallel to the variable resistor VR1 without using the protective resistor Rx of the broadband voltage adjusting unit 111.

  As shown in FIG. 3b, the shaft 117 of the semi-fixed variable resistor VR2 is attached to the outside of the case 113 or attached to the inside of the case 113, but the shaft 117 can be rotated by an adjusting screwdriver. A hole 118 may be provided in the case 113 as in 3c.

  By adding the broadband voltage adjusting unit 111, for example, when the lamp is connected to the load, the vicinity of the minimum rotation position of the variable resistor VR1 becomes the adjustment band, and when the fan is connected to the load, the maximum of the variable resistor VR1 is set. In the system where the vicinity of the rotational position is the adjustment band, the transformation bandwidth can be easily changed according to the load. This is because the variable resistor VR1 is positioned at the minimum resistance value, the semi-fixed variable resistor VR2 is adjusted outside the case 113 to adjust the operation point of the AC load, and then the operating voltage can be adjusted only by the variable resistor VR1. Therefore, broadband voltage adjustment for various AC loads is possible.

  FIG. 4 is a circuit diagram for explaining an embodiment of DC load transformer 120.

  A broadband voltage regulator 121 is added in the same manner as in FIG. 3 a, the AC power supply and the output terminal of the voltage regulator 122 are connected to the primary side of the transformer 123, and the secondary side of the transformer 123 is connected via the DC rectifier circuit 124. Connected to a DC load.

  The shaft (adjustment knob) 114 of the variable resistor VR1 is attached to the outside of the case 113 as shown in FIG. 2B so that the voltage applied to the AC load can be easily adjusted outside. The shaft 117 of the semi-fixed variable resistor VR2 is also attached to the outside of the case 113 or the inside of the case 113 as shown in FIG. 3b, but the shaft 117 can be rotated by an adjusting screwdriver as shown in FIG. Thus, the hole 118 can be provided in the case 113.

  The variable resistor VR1 is positioned at the minimum resistance value, and the minimum operating point of the load is adjusted using the shaft of the semi-fixed variable resistor VR2 mounted inside the case, so that the DC voltage is appropriately adjusted according to the load. And can adjust the broadband voltage for the DC load.

  FIG. 5 is a circuit diagram for explaining an embodiment of the power supply unit 131.

  The power supply unit 131 that provides the power supply voltage Vcc for the operation of the load blinking controller 130 includes a down transformer T1 that lowers an AC input voltage (for example, 220V) according to the operation of the switch SW, and a secondary of the down transformer T1. The rectifier circuit BD1 connected to the rectifier circuit and a constant voltage circuit U7 for setting the output of the rectifier circuit BD1 to a constant voltage. As the rectifier circuit BD1, for example, a double-wave rectifier circuit using a bridge diode, a half-wave rectifier circuit using a single rectifier diode, a constant voltage circuit using a Zener diode, or the like can be used. Can be configured using a constant voltage IC (for example, LM7809) or the like.

  FIG. 6 is a detailed circuit diagram of the main on / off adjusting unit 132. According to FIG. 6, the reset terminal RESET of the timer integrated circuit U1 and the reset terminal RESET of the timer integrated circuit U2 are used as signal inputs, and such connection is one of the core configurations according to the present invention.

  The timer integrated circuit U1 outputs a signal having an on-time length according to the time constants of the capacitor Ca and the variable resistor Ra connected to the discharge terminal DISCH, the threshold terminal THRES, and the trigger terminal TRIG. A low signal causes the timer integrated circuit U2 to be reset by the transistor TR1 operating in response to the output signal of the timer integrated circuit U1 and the coil RL1 of the relay Relay1. The on-time t1 can be adjusted by noting the output waveform at this time as t1 and adjusting the variable resistor Ra.

  The timer integrated circuit U2 outputs a signal having a length of off time according to the time constant of the capacitor Cc and the variable resistor Rc connected to the discharge terminal DISCH, the threshold terminal THRES, and the trigger terminal TRIG. A low signal causes the timer integrated circuit U1 to be reset by the transistor TR2 and the load resistor RL2 that operate according to the output signal of the timer integrated circuit U2. The output waveform at this time is denoted by t2, and the off time t2 can be adjusted by adjusting the variable resistor Rc.

  The output signal of the timer integrated circuit U1 is supplied to the trigger TRIG input terminal of the timer integrated circuit U5 of the starter 134, and the output signal of the timer integrated circuit U2 is supplied to the trigger TRIG input terminal of the timer integrated circuit U6 of the starter 134. As a result, the activation unit 134 is operated.

  Conventionally, when the on and off times are set to be the same, it is extremely rare, but the same phase and period can be input simultaneously to the trigger terminal TRIG of the integrated circuit at the moment when the power is supplied. Further, there is a fatal problem that the oscillation stops when the integrated circuit cannot be triggered while outputting the on and off signals of the period, that is, a panic phenomenon occurs.

  However, when the power is supplied, the main on / off adjusting unit 132 according to the preferred embodiment of the present invention operates the relay RL1 and resets the timer integrated circuit U2 during the time of the variable resistor Ra, and thereafter At the same time as the operation of relay RL1 is stopped, the reset of timer integrated circuit U2 is canceled and timer integrated circuit U2 is operated. At the same time, the load RL2 is operated during the time of the variable resistor Rc, and the timer integrated circuit U1 is reset. Oscillation is performed while the timer integrated circuits U1 and U2 are alternately reset by such a configuration and operation, so that a panic phenomenon that is a fatal problem of the conventional method can be fundamentally prevented. Therefore, the main on / off adjusting unit 132 operates as an oscillator capable of individually adjusting the on time and the off time when power is supplied. For example, the on and off times from 0.1 seconds to 3 minutes can be individually adjusted.

  FIG. 7 is a circuit diagram for explaining an embodiment of the sub on / off adjusting unit 133. According to FIG. 7, the reset terminal RESET of the timer integrated circuit U3 and the reset terminal RESET of the timer integrated circuit U4 are used as signal input terminals, and such connection is another one in the core configuration according to the present invention. is there. The timer integrated circuit U3 outputs a signal having an on-time length according to the time constants of the capacitor Cd and the variable resistor Rd connected to the discharge terminal DISCH, the threshold terminal THRES, and the trigger terminal TRIG. A low signal causes the timer integrated circuit U4 to be reset by the transistor TR3 operating in response to the output signal of the timer integrated circuit U3 and the coil RL3 of the relay Relay2. At this time, the output waveform is expressed as t3, and the on-time t3 can be adjusted by adjusting the variable resistor Rd.

  The timer integrated circuit U4 outputs a signal having a length of off time according to the time constants of the discharge terminal DISCH, the threshold terminal THRES, the capacitor Ce connected to the trigger terminal TRIG, and the variable resistor Re. A low signal causes the timer integrated circuit U3 to be reset by the transistor TR4 operating in response to the output signal of the timer integrated circuit U4 and the coil RL4 of the relay Relay3. At this time, the output waveform is expressed as t4, and the off time t4 can be adjusted by adjusting the variable resistance Re. At this time, connection of the relays Relay 2 and Relay 3 will be described with reference to the relay contact unit 140.

  As a result, when the power is supplied, the sub on / off adjusting unit 133 according to the preferred embodiment of the present invention operates the relay coil RL3 for a time by the variable resistor Rd and simultaneously resets the timer integrated circuit U4. Thereafter, the operation of the relay coil RL3 is stopped, and at the same time, the reset of the timer integrated circuit U4 is released and the timer integrated circuit U4 is operated. At the same time, the relay coil RL4 is operated during the time of the variable resistor Re, and the timer integrated circuit U3 is reset. With this configuration and operation, the timer integrated circuits U3 and U4 oscillate while being alternately reset, so that the panic phenomenon that is a fatal problem in the past can be fundamentally prevented. Therefore, when the power is supplied, the sub on / off adjusting unit 133 functions as an oscillator capable of individually adjusting the on time and the off time. For example, the on and off times from 0.1 seconds to 10 minutes can be individually adjusted.

  FIG. 8 a is a circuit diagram for explaining an embodiment of the activation unit 134. An output signal in a low pulse state provided from the timer integrated circuit U1 of the main on / off adjusting unit 132 is input to the trigger terminal TRIG of the timer integrated circuit U5 by the capacitor C7 and the resistor R7 of the starting unit 134. The output of the variable resistor Rf connected to the discharge terminal DISCH and the threshold terminal THRES and the on-time length based on the time constant of the capacitor Cf operates the coil RL5 of the relay Relay4 via the output terminal out of the timer integrated circuit U5. The output waveform at this time is expressed as t5, and the connection of the relay contacts will be described in the relay contact portion 140.

  The output signal in the low pulse state provided from the timer integrated circuit U2 of the main on / off adjusting unit 132 is also input to the trigger terminal TRIG of the timer integrated circuit U6 by the capacitor C8 and the resistor R8 of the starting unit 134. The output of the on-time length based on the time constant of the variable resistor Rg and the capacitor Cg connected to the discharge terminal DISCH and the threshold terminal THRES operates the coil RL6 of the relay Relay5 via the output terminal Out of the timer integrated circuit U6. .

  As a result, the activation unit 134 according to the preferred embodiment of the present invention receives the output signals of the timer integrated circuit U1 and the timer integrated circuit U2 one by one, and relays the relay relay 4 and the relay relay 4 in the on time by adjusting the variable resistors Rf and Rg. The relay Relay5 is operated, and a high voltage is temporarily applied to the AC load 150 and the DC loads 151, 152, 153, and 254 to activate the AC and DC loads. For example, when a DC motor driven by DC12V is to be driven at a rotational speed corresponding to 6V, if 6V is supplied from the beginning, the motor does not start. Accordingly, if 6V is supplied after 12V is initially supplied to start the motor, the rotation speed can be controlled to a desired value. Such an AC and DC load activation (trigger) system is one of the core components according to the present invention.

  FIG. 8b is a circuit diagram for explaining a relay used in the present invention. A portion denoted as Relay x is a contact point side of the relay, and x of the relay coil RLx is a number corresponding to the relay number. Com (Common) is an intermediate contact and a common contact of the relay. C (Normal Cross) is a contact that is connected to the common contact when not in operation. O (Normal Open) is a contact point connected to the common contact point during operation. In the present invention, all the relays are indicated by the above notation, and the names of the contacts are omitted in the following drawings.

  FIG. 9A is a circuit diagram of a monostable oscillator circuit using a timer integrated circuit applied to the starting unit 134, and FIG. 9B is a diagram showing an output waveform of the monostable oscillator circuit in the case of sequential input.

  When the signal Input is input to the trigger terminal TRIG of the timer integrated circuit U1, an output having an on-time length based on the time constants of the variable resistor Ra and the capacitor C connected to the discharge terminal DISCH and the threshold terminal THRES is output to the output terminal Out. And the constant load RL is operated. The output waveform at this time is as shown by t1 in FIG. 9b. When there is a sequential input, when the input signal Input changes from low to high, an output having an on-time length based on the time constant of the variable resistor Ra and the capacitor C is output from the low edge in a waveform like t1 via the output terminal Out. Is done. Therefore, if there is only one input signal Input, one output signal at t1 is also output. If the input signal Input is continuous, the output signal at t1 is also output continuously, thereby operating as an oscillator. . When the variable resistor Ra is adjusted, the on and off times are adjusted proportionally without being individually adjusted.

  FIG. 10 is a circuit diagram for explaining an embodiment of the relay contact portion 140. The AC load transformer 110 and the DC load transformer 120 are also shown together to help understand the connection relationship, but since the detailed description of this part has been described above with reference to FIGS. To explain.

  The relay contact unit 140 includes a manual switch SW, AC relays Relay 6 to Relay 7 having contacts, and relays Relay 1 to Real 5 controlled by the load blinking controller 130.

  When the manual switch SW is turned on, the contact of the relay Relay 6 is connected to the lower side, and an AC power supply voltage that is not transformed is applied to the AC load 150. Further, the contact point of the relay Relay 7 is connected to the lower side, and a DC voltage that is not transformed is applied to the DC loads 151 to 154. At this time, the DC loads 151 to 154 are turned on and off according to the connection of the contacts of the relays Relay1 to Relay3.

  When the manual switch SW is turned off, the contact of the relay Relay 6 is connected to the upper side, and the AC voltage transformed by the adjustment of the AC load transformer 110 is applied to the AC load 150. Also, the relay Relay 7 contact is connected to the upper side, and the DC voltage transformed by the adjustment of the DC load transformer 120 is applied to the DC loads 151 to 154. At this time, the DC loads 151 to 154 are turned on and off by connecting the relays Relay1 to Relay3.

  On the other hand, the operation of the manual switch SW is performed only for the time when the contact of the relay Relay 4 or Relay 5 is connected to the lower side under the control of the activation unit 134, but the AC load 150 and the DC loads 151 to 154 are An AC voltage and a DC voltage that are not transformed are applied to cause an initial start (trigger). Therefore, even when an AC or DC fan is to be driven with an AC and DC load, for example, a voltage lower than the minimum specification, the fan can be initially started. Further, by adjusting the connection combination of relays Relay1 to Relay3 and the on / off time of the load blinking controller 130, the DC loads 151 to 154 existing as four channels can be individually turned on and off.

  The above circuit diagram shows a preferred embodiment of the load control device according to the present invention, and the circuit connection method and the number of channels can be varied in various ways within the scope of the idea of the present invention.

  FIG. 11 shows an output waveform of the load control device according to the present invention.

  The DC loads 151, 152, 153, and 154 are individually driven to indicate that a pulse A having a large voltage and a small width appears at the beginning of each on-time. This pulse A is used for the initial activation of the DC load. This indicates that an untransformed voltage is applied in the initial stage of driving.

  The preferred embodiment of the present invention has been disclosed above by the detailed description and the drawings. Certain terminology was used, but this was merely for the purpose of describing the present invention and was used to limit its meaning or to limit the scope of the invention as claimed. It is not a thing. Accordingly, those skilled in the art can understand that various modifications and other equivalent embodiments are possible from this. Therefore, the true technical protection scope of the present invention should be determined by the technical idea of the claims.

It is a block diagram for demonstrating the load control apparatus which concerns on embodiment of this invention. It is a circuit diagram for demonstrating one Embodiment of the alternating current load transformer shown in FIG. It is a perspective view which shows the structural example of the variable resistance shown to FIG. 2a. It is a circuit diagram for demonstrating other embodiment of the alternating current load transformer shown in FIG. It is a perspective view which shows the structural example of the variable resistance shown to FIG. 3a. It is a perspective view which shows the structural example of the variable resistance shown to FIG. 3a. It is a circuit diagram for demonstrating embodiment of the direct-current load transformer shown in FIG. It is a circuit diagram for demonstrating the power supply part shown in FIG. It is a circuit diagram for demonstrating the main on-off adjustment part shown in FIG. It is a circuit diagram for demonstrating the sub on-off adjustment part shown in FIG. It is a circuit diagram for demonstrating the starting part shown in FIG. It is a circuit diagram for demonstrating the relay used for this invention. It is a circuit diagram of the oscillation circuit applied to the starting part of FIG. 8a. FIG. 9b is an output waveform diagram for explaining FIG. 9a. It is a circuit diagram for demonstrating the relay contact part shown in FIG. It is an output waveform diagram of the load control device according to the present invention.

Explanation of symbols

110 AC load transformer 111, 121 Broadband voltage regulator 112, 122 Voltage regulator 113 Case 114, 117 Shaft 118 Hole 120 DC load transformer 123 Transformer 124 DC rectifier circuit 130 Load blinking controller 131 Power supply 132 Main on / off regulator 133 Sub ON / OFF adjustment unit 134 Start unit 140 Relay contact unit 150 AC load 151, 152, 153, 154 DC load

Claims (9)

In response to supply of the AC power source and outputs a voltage for driving the plurality of DC loads, and a DC load transformer capable of adjusting the transformer bandwidth to accommodate the plurality of DC loads,
By on-time and off-time length of the signal outputs respectively, the first timer integrated circuit and the second timer integrated circuit to oscillate while being alternately reset by the first and second timer integrated circuit, wherein A main on / off adjustment unit capable of individually adjusting the length of the on-time and off-time;
The third timer integrated circuit and the fourth timer integrated circuit respectively output on-time and off-time length signals having periods different from those of the output signal of the main on / off adjusting unit by the third and fourth timer integrated circuits. And a sub on / off adjusting unit capable of adjusting the lengths of the on-time and off-time by oscillating while being alternately reset , and
At the time of initial startup of the plurality of DC loads , an initial startup signal is output so that a maximum voltage is applied to the plurality of DC loads according to signals input from the main on / off adjuster and the sub on / off adjuster. An activation part;
The voltage supplied from the DC load transformer is supplied to the plurality of DC loads according to the output signals of the main ON / OFF adjusting unit and the sub ON / OFF adjusting unit, and the starting is performed when the plurality of DC loads are initially started. A relay contact portion for supplying an initial starting voltage to the plurality of DC loads in response to a signal supplied from the portion;
A load control device comprising: Characterized in that said receiving supply of AC power source and outputs a voltage for driving the AC load, further comprising an AC load transformer capable of adjusting the transformer bandwidth to conform to the AC load The load control device according to claim 1.   The transformer bandwidth is adjusted by a semi-fixed variable resistor, and the shaft of the variable resistor is attached to the outside of the case, or a hole is formed in the case so that the resistance value of the variable resistor can be adjusted using a screwdriver. The load control device according to claim 2, wherein the load control device is provided.   The transformer bandwidth is adjusted by a semi-fixed variable resistor, and the shaft of the variable resistor is attached to the outside of the case, or a hole is formed in the case so that the resistance value of the variable resistor can be adjusted using a screwdriver. The load control device according to claim 1, wherein the load control device is provided. The DC load transformer is:
A voltage adjusting unit capable of adjusting a transformation bandwidth of the AC power source;
A transformer having a primary side coupled to the AC power supply and an output terminal of the power supply adjustment unit;
A rectifier circuit that outputs a voltage for driving the DC load by changing a secondary side voltage of the transformer to DC;
The load control device according to claim 1, comprising: The main on / off adjusting unit includes:
Said first timer integrated circuit,
A first capacitor and a first variable resistor connected to a discharge terminal, a threshold terminal, and a trigger terminal of the first timer integrated circuit and providing a time constant for the on-time length;
A first transistor that operates in response to an output signal of the first timer integrated circuit;
A relay having a coil connected between a power supply voltage and the first transistor;
The second timer integrated circuit reset by the output of the first transistor;
A second capacitor and a second variable resistor connected to a discharge terminal, a threshold terminal, and a trigger terminal of the second timer integrated circuit and providing a time constant for the off-time length;
A second transistor that operates in accordance with an output signal of the second timer integrated circuit and outputs a signal for resetting the first timer integrated circuit ;
The load control device according to claim 1, comprising: The sub-on / off adjusting unit is
Said third timer integrated circuit,
A third capacitor and a third variable resistor connected to a discharge terminal, a threshold terminal, and a trigger terminal of the third timer integrated circuit, and providing a time constant for the on-time length;
A third transistor that operates in response to an output signal of the third timer integrated circuit;
A relay having a coil connected between a power supply voltage and the third transistor;
Said fourth timer integrated circuit which is reset by the output of said third transistor,
A fourth capacitor and a fourth variable resistor connected to a discharge terminal, a threshold terminal, and a trigger terminal of the fourth timer integrated circuit, and providing a time constant for the off-time length;
Operates in response to an output signal of said fourth timer integrated circuit, and a fourth transistor for outputting a signal for resetting the third timer integrated circuit,
The load control device according to claim 1, comprising: The activation unit is
Through the trigger terminal, and a fifth timer integrated circuit for receiving an input of a signal supplied from the first timer integrated circuit of the main on-off control unit comprises
A fifth capacitor and a fifth variable resistor connected to a discharge terminal and a threshold terminal of the fifth timer integrated circuit and providing a time constant for an on-time length;
A fifth transistor that operates in response to an output signal of the fifth timer integrated circuit;
A fifth relay having a coil connected between a power supply voltage and the fifth transistor;
Through the trigger terminal, and a sixth timer integrated circuit for receiving an input of a signal supplied from the second timer integrated circuit of the main on-off control unit comprises
A sixth capacitor and a sixth variable resistor connected to a discharge terminal and a threshold terminal of the sixth timer integrated circuit and providing a time constant for an on-time length;
A sixth transistor that operates in response to an output signal of the sixth timer integrated circuit;
A sixth relay having a coil connected between a power supply voltage and the sixth transistor;
The load control device according to claim 1, comprising:   The load control device according to claim 1, wherein the load is a fan, an electric lamp, or a motor.

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