CN1258957A

CN1258957A - Supply unit for electronic machine

Info

Publication number: CN1258957A
Application number: CN99127084A
Authority: CN
Inventors: 关康茂
Original assignee: Aiwa Co Ltd
Current assignee: Sony Group Corp
Priority date: 1998-12-28
Filing date: 1999-12-28
Publication date: 2000-07-05
Anticipated expiration: 2019-12-28
Also published as: KR20000057100A; CN1126240C; JP2000197268A

Abstract

A tap is equipped in the primary winding 22 of a main transformer 20. According to a power source voltage, primary winding 21, 22 of the transformer 20 and primary windings 31, 32 of a subtransformer 30 are switched over with a voltage selector 40, in such a manner that parallel connection or series connection is selected, or windings between terminals 22b and 22c of the primary windings 21 and 22 are made into a series connection, and a winding between terminals 22a and 22b of the primary winding 22 and the primary windings 31 and 32 of the subtransformer 30 are made a series connection. When the electronic equipment is in a standby state, power supply to the primary windings 21, 22 of the transformer 20 is stopped. When the electronic equipment is operated, power is supplied to the primary windings 21, 22 of the transformer 20.

Description

The supply unit of e-machine

The present invention relates to a kind of supply unit of e-machine, particularly, relate to by means of switching device shifter, according to supply voltage, be connected in parallel or be connected in series if the 2nd primary coil of the 1st primary coil of the 1st transformer and the 2nd transformer switched to, e-machine when standby just the 1st primary coil and the 2nd primary coil to the 1st transformer stop power supply and the supply unit that e-machine the time is just powered to the 1st primary coil and the 2nd primary coil of the 1st transformer in work.

In recent years, constantly carrying out various countermeasures for environmental problem, for example in e-machine, in order to cut down power consumption most effectively, thereby the power consumption when cutting down work.So, can reduce the power generation amount, just can cut down the amount of carbon dioxide of following generating and producing with the reduction of power consumption.

And, in the e-machine, also all consume electric power when not only working but also during standby.For example, since to the remote signal receiving circuit (hereinafter referred to as: remote-control receiving circuit) and timing circuit etc. power, detect with remote-control receiving circuit by remote control signal transmitter (hereinafter referred to as: telecontrol transmitter) during the signal of the regulation of Gong Geiing, when perhaps detecting the signal of process stipulated time, just become the work of beginning e-machine immediately with timing circuit.Therefore, in order further to cut down the power consumption of e-machine, when not only working and the power consumption during standby also should cut down.

Here, can propose a kind of, for example be provided with the e-machine of two transformers, can take to power to remote-control receiving circuit or timing circuit with a transformer, the way of powering to other circuit with another transformer is simultaneously cut down when not only working but also the power consumption during standby.

Although, use the source power supply in the area (destination) of e-machine (to be designated hereinafter simply as: voltage difference civil power), because being provided with voltage selects to carry out the coil of primary coil of transformer or the switching of tap with switch (hereinafter referred to as voltage selector), even make that the voltage of responding in a secondary side of transformer also becomes necessarily under the different situation of voltage.

Therefore, the transformer that is used for circuit such as remote-control receiving circuit and timing circuit are powered (hereinafter referred to as: teaser transformer), if will be provided with according to the coil of the line voltage number of destination or the transformer of tap, the number of terminal just increases so, even power consumption is little in remote-control receiving circuit or the timing circuit, teaser transformer is maximized.

And, if the coil according to the line voltage number of destination is set in teaser transformer, be respectively equipped with the transformer that is used for other circuit are powered (hereinafter referred to as: main transformer) and be used to carry out under the situation of the voltage selector that the coil etc. of teaser transformer switches, can not in main transformer and teaser transformer, carry out the while such as the switching of coil etc. simultaneously.And,, just must use voltage selector with a plurality of contacts if carry out the coil switching of main transformer and teaser transformer simultaneously by a voltage selector.

Therefore, the purpose of the present application provides a kind of supply unit of e-machine, so that eliminate above-mentioned prior art problems.

Even another purpose of the present application provides and a kind ofly uses a plurality of transformers when the power consumption of cutting down e-machine, also can not increase the contact number of the switching device shifter of operating according to supply voltage, the supply unit of the transformer miniaturization of using in the time of standby can being made simultaneously.

For achieving the above object, be equipped with according to the supply unit of the e-machine of an aspect of the present application: the 1st and the 2nd transformer that possesses the 1st and the 2nd primary coil; According to supply voltage the 1st and the 2nd primary coil of the 1st and the 2nd transformer is switched to and to be connected in parallel or the company of series connection, obtain the switching device shifter of assigned voltage from secondary coil one side of the 1st and the 2nd transformer; And e-machine the 1st and the 2nd primary coil to the 1st transformer when standby stops power supply, and the power supply apparatus for controlling of supply that e-machine is powered to the 1st and the 2nd primary coil of the 1st transformer when work.

And, on the 2nd primary coil of the 1st transformer, be provided with tap, the 2nd primary coil is divided into the 3rd primary coil and the 4th primary coil, if use switching device shifter, according to supply voltage the switching that is connected in series of the 1st primary coil of the 1st transformer and the 3rd primary coil, the 4th primary coil of switching the 1st transformer and the 1st and the 2nd primary coil of the 2nd transformer simultaneously are connected in series, then suppose and use voltage supply control device, e-machine stops the 1st and the 3rd primary coil power supply to the 1st transformer when standby, then e-machine powers for the 1st and the 3rd primary coil of the 1st transformer when work.

In an example of the present invention,, according to line voltage the 1st primary coil of the 1st and the 2nd transformer and the 2nd primary coil are switched to and to be connected in parallel or to be connected in series for example by means of voltage selector.And, if if the coil resistance of the primary coil of the 1st transformer little than the 2nd transformer, the 2nd primary coil of the 1st transformer is provided with tap simultaneously, when the 2nd primary coil is divided into the primary coil of the 3rd primary coil and the 4th, not only the 1st primary coil of the 1st and the 2nd transformer and the 2nd primary coil are connected in parallel or are connected in series according to line voltage, and the 1st primary coil of the 1st transformer and the 3rd primary coil switched to when being connected in series, also the 1st and the 2nd primary coil of the 4th primary coil of the 1st transformer and the 2nd transformer is switched to and be connected in series.

Here, e-machine stops to supply with civil power to the 1st primary coil and the 2nd primary coil of the 1st transformer when standby, perhaps the 1st and the 2nd primary coil of the 1st transformer is stopped the supply of civil power.And e-machine is in when work, carries out the supply of civil power to the 1st primary coil and the 2nd primary coil of the 1st transformer, and perhaps the 1st and the 3rd primary coil to the 1st transformer carries out the supply of civil power.

Fig. 1 illustrates the circuit structure diagram according to the supply unit formation of the e-machine of the present application.

Fig. 2 is the structure chart of the major part of work when line voltage is for " 120V " among the embodiment of key diagram 1.

Fig. 3 is the structure chart of the major part of work when line voltage is for " 240V " among the embodiment of key diagram 1.

Fig. 4 is the structure chart of the major part of work when line voltage is for " 230V " among the embodiment of key diagram 1.

Below, the limit describes an embodiment of the invention process with reference to the accompanying drawing limit.

Fig. 1 shows the supply unit of e-machine, and a terminal of plug 10 is connected with the terminal 21a of the primary coil 21 of main transformer 20, the terminal 31a of the primary coil 31 of teaser transformer 30 and the terminal 41a of voltage selector 40 are connected.

As the main transformer 20 of the 1st transformer, be one and be used for line voltage is carried out the transformer that each circuit of the e-machine of voltage transformation is powered that it has two primary coils 21 and 22.And in main transformer 20, each circuit (scheming not shown) according to e-machine 100 is provided with secondary coil 90, is powered to e-machine 100 by secondary coil 90.Teaser transformer 30 as the 2nd transformer is also same with main transformer 20, carries out the voltage transformation of civil power, and the circuit that the e-machine that will be in holding state is become operating state is powered simultaneously.This teaser transformer 30 has two

primary coils

31 and 32 and secondary coils 33.

As the voltage selector 40 of switching device shifter, for example use the toggle switch (slideswitch) of two-way to constitute, it has three kinds of switching modes (switch modes).Just, move by the movable element 42,43 that makes voltage selector 40, can switch between terminal 41a, the 41b and become the pattern of conducting state between terminal 42a, the 42b, between terminal 41b, the terminal 41c and become the pattern of conducting state between terminal 42b, the terminal 42c, and between terminal 41c, the 41d and become the pattern of conducting state between terminal 42c, the 42d.

Another terminal of plug 10 is connected with terminal 32b and the terminal 42a of the voltage selector 40 and terminal 72b of relay 70 of the primary coil 32 of teaser transformer 30.These relay 70 usefulness the relay of two circuit, controllable flow is to the electric current of coil 73, makes between terminal 71a, the 71b of relay 70 and becomes conducting state or off-state between terminal 72a, the 72b.

Terminal 21a as the coil 21 of the 1st primary coil of main transformer 20 is connected with a terminal of plug 10 as described above, and the terminal 21b of primary coil 21 is connected with the terminal 71a of relay 70 simultaneously.The terminal 71b of relay 70 receives on terminal 41d, the 42b of the terminal 31b of primary coil 31 of teaser transformer 30 and voltage selector 40.And, be provided with the transformer of tap as the coil 22 of the 2nd primary coil of main transformer 20, primary coil 22 is divided into coil (the 3rd primary coil) between terminal 22b, the 22c and the coil (the 4th primary coil) between terminal 22a, the 22b.Therefore, a terminal 22a of primary coil 22 receives on terminal 41b, the 41c of the terminal 32a of primary coil 32 of teaser transformer 30 and voltage selector 40.In addition, the terminal 22b of the tap of primary coil 22 receives on the terminal 42c of voltage selector 40, and another terminal 22c of primary coil 22 is connected with the terminal 72a of relay 70 simultaneously.

The terminal 31a of the primary coil 31 of teaser transformer 30 is connected with a terminal of plug 10 as described above, and the terminal 31b of primary coil 31 receives the terminal 71b of relay 70 and terminal 41d, the 42b of voltage selector 40 simultaneously.And the terminal 32a of the primary coil 32 of teaser transformer 30 receives on the terminal 22a of primary coil 22 as described above, the tops such as another terminal that the terminal 32b of while primary coil 32 receives plug 10.In addition, terminal 33a, the 33b of the secondary coil 33 of teaser transformer 30 receive on AC input terminal 50a, the 50c of bridge rectifier 50.

The positive pole one side lead-out terminal 50b of bridge rectifier 50 is connected with input terminal one side of voltage stabilizing circuit 52, simultaneously the negative pole one side lead-out terminal 50d ground connection of bridge rectifier 50.And the positive pole one side lead-out terminal 50b of bridge rectifier 50 receives on the collector electrode of NPN transistor 64.In addition, between the positive pole one side lead-out terminal 50b of bridge rectifier 50 and the negative pole one side lead-out terminal 50d, be connected to smoothing capacitor 51.

Lead-out terminal one side of voltage stabilizing circuit 52 is connected to the control circuit 55 and the remote-control receiving circuit 60 that are made of microcomputer etc., and is powered to control circuit 55 and remote-control receiving circuit 60 by voltage stabilizing circuit 52.

In the control circuit 55 that constitutes voltage supply device, produce drive signal Rdr according to power control signal Spw from remote-control receiving circuit 60, supply with the base stage of NPN transistor 64 by resistor 62.Be connected to terminal 73a of coil 73 of relay 70 and diode 80 negative electrodes that surge (surge) absorbs usefulness on the emitter of NPN transistor 64.And, another terminal 73b of coil 73 and the plus earth of diode 80.Also have, voltage supply device is made of control circuit 55, remote-control receiving circuit 60 and relay 70 etc.

Therefore, when standby, the signal level of drive signal Rdr is low level L, and NPN transistor 64 is a cut-off state, becomes off-state between terminal 71a, the 71b of relay 70 and between terminal 71a, the 72b, thereby stops to supply with civil power to main transformer 20.

Secondly, the action with regard to the setting of the asynchronous voltage selector of line voltage and supply unit at this moment describes.For example, by means of voltage selector 40, to selectable line voltage " 120V (U.S. and Canada etc.) ", " 220～230V (France, Germany etc.) ", the situation of " 240V (Britain etc.) " describes.

With the primary coil 21 of

main transformer

20 and 22 and the wire circle of secondary coil be set at, make it when applying the alternating voltage of " 120V " between terminal 21a, the 21b at primary coil 21, obtain the voltage of regulation in secondary coil one side, simultaneously when applying the alternating voltage of " 120V " between terminal 22a, the 22c at primary coil 22, obtain the voltage of regulation in secondary coil one side, in addition, position in tap, when applying the alternating voltage of " 110V " between terminal 22b, the 21c at primary coil 22, obtain the voltage of regulation in secondary coil one side.

The

primary coil

31,32 of teaser transformer 30 and the wire circle of secondary coil 33 are set at, make it when applying the alternating voltage of " 120V " between terminal 31a, the 31b at primary coil 31, to obtain the voltage of regulation, when applying " 120V " between terminal 32a, the 32b at primary coil 32, obtain the wire circle of assigned voltage simultaneously in secondary coil 33 1 sides in secondary coil 33 1 sides.

Here, when the voltage of civil power was " 120V ", operating voltage selector 40 as shown in Figure 2, by means of movable element 43, will become conducting state between terminal 41a, the 41b and between terminal 42a, the 42b.In this case, the primary coil 31 of

teaser transformer

30 and 32 is connected in parallel, and adds alternating voltage respectively on this primary coil that is connected in parallel 31,32.Therefore, when line voltage is " 120V ", becomes the voltage of stipulating in the secondary coil 33 1 sides acquisition of teaser transformer 30, and control circuit 55 and remote-control receiving circuit 60 are correctly worked.

And, if by means of telecontrol transmitter etc., make e-machine become the operation of conducting state, make between terminal 71a, the 71b of relay 70 and when becoming conducting state between terminal 72a, the 72b, just the

primary coil

21 and 22 with main transformer 20 is connected in parallel, owing to add the voltage of " 120V " on this primary coil that is connected in parallel 21 and 22 respectively, the result becomes the voltage that obtains regulation in secondary coil one side of main transformer 20, and e-machine is correctly worked.

When line voltage was " 240V ", operating voltage selector 40 as shown in Figure 3, by means of movable element 43, will become conducting state between terminal 41c, the 41d and between terminal 42c, the 42d.In this case, the

primary coil

31 and 32 of teaser transformer 30 is connected in series, and this primary coil that is connected in

series

31,32 is added alternating voltage.Therefore, when line voltage is " 240V ", becomes the voltage of stipulating in the secondary coil 33 1 sides acquisition of teaser transformer 30, and control circuit 55 and remote-control receiving circuit 60 are correctly worked.

And, if by means of telecontrol transmitter etc., make e-machine become the operation of conducting state, and when becoming conducting state between terminal 71a, the 71b of relay 70 and between terminal 72a, the 72b, just the primary coil 21 of

main transformer

20 and 22 polyphones are connect, owing to the voltage that this primary coil that is connected in

series

21 and 22 is added " 240V ", the result becomes the voltage that obtains regulation in secondary coil one side of main transformer 20, and e-machine is correctly worked.

When line voltage was " 230V ", operating voltage selector 40 as shown in Figure 4, by means of movable element 43, will become conducting state between terminal 41b, the 41c and between terminal 42b, the 42c.In this case, the part (coil between terminal 22a, the 22b) of the

primary coil

31,32 of teaser transformer 30 and the primary coil 22 of main transformer 20 is connected in series, and the part of the primary coil 22 of this primary coil that is connected in

series

31,32 and main transformer 20 is added alternating voltage.

Here, the primary coil 21 of

main transformer

20 and 22 is owing to be to be used to supply with the power supply that makes e-machine work, its coil resistance is less, with respect to the secondary coil 31 of

teaser transformer

30 and 32 coil resistance, the coil resistance between terminal 22a, the 22b of the primary coil 22 of main transformer 20 can be ignored.Therefore, when line voltage is " 230V ", be not subjected to the influence of the coil between terminal 22a, the 22b of primary coil 22 of main transformer 20, become the voltage that secondary coil 33 1 sides at teaser transformer 30 can obtain to stipulate, and control circuit 55 and remote-control receiving circuit 60 are correctly worked.

And, if make e-machine become the operation of conducting state by means of telecontrol transmitter etc., when becoming conducting state between terminal 71a, the 71b of relay 70 and between terminal 72a, the 72b, just coil between terminal 22b, the 22c of the primary coil 21 of main transformer 20 and primary coil 22 and polyphone are connect, the coil between terminal 22a, the 22b of this primary coil that is connected in series 21 and primary coil 22 is added the voltage of " 230V ".

Here, the coil between terminal 22b, the 22c of primary coil 22 is, applies under the alternating voltage of " 120V " between this

terminal

22b, 22c, can obtain the wire circle of assigned voltage in secondary coil one side.Therefore, by the coil between terminal 22b, the 22c of the primary coil 21 that is connected in series and primary coil 22 being applied the voltage of " 230V ", just can obtain the voltage of regulation, and e-machine is correctly worked in secondary coil one side of main transformer 20.Also have, at this moment, because of the voltage difference of generation " 10V " between terminal 22b, the 22c of the primary coil 22 of main transformer 20, so added the voltage of " 230V+10V " between the terminal 32b of the terminal 31a of the primary coil 31 of teaser transformer 30 and primary coil 32.But in secondary coil 33 1 sides of teaser transformer 30, it is few only to be connected to control circuit 55 and remote-control receiving circuit 60 and power consumption, so even the voltage of primary coil one side rises to " 240V " from " 230V ", power loss can not increase considerably yet.

Like this, according to the above embodiments, employing is with a voltage selector, voltage according to civil power, a plurality of primary coils of main transformer and teaser transformer are switched to the way that is connected in series or is connected in parallel simultaneously, just can obtain the voltage of regulation in secondary coil one side of main transformer and teaser transformer.And e-machine stops each primary coil of main transformer is supplied with civil power by means of relay 70, thereby can provide a kind of power consumption few supply unit when standby.

Also have, in the above-described embodiment, carry out element the power supply control of primary coil though set with relay, also can be for example semiconductor device etc. as controlling the element of powering.And, as if part of attended operation on control circuit 55 or clock part,, produce drive signal Rdr according to the clock information of assigning to by operation part or clock portion, it is good to drive relay 70.And above-mentioned power source voltage value is an illustrative, self-evident being not limited thereto.

According to the present invention, by means of switching device shifter, according to supply voltage, the 1st primary coil of the 1st and the 2nd transformer and the 2nd primary coil are switched to when being connected in parallel or being connected in series, e-machine the 1st primary coil and the 2nd primary coil to the 1st transformer when standby stopped power supply, and e-machine is powered to the 1st primary coil and the 2nd primary coil of the 1st transformer when work.Therefore, the number of contacts of switching device shifter can be prevented to increase, small-sized transformer can be adopted as the 2nd transformer simultaneously.

And, on the 2nd primary coil of the 1st transformer, be provided with tap, the 2nd primary coil is divided into the 3rd primary coil and the 4th primary coil, according to supply voltage, the 1st primary coil of the 1st transformer and the 3rd primary coil switched to be connected in series, simultaneously the 1st and the 2nd primary coil of the 4th primary coil of the 1st transformer and the 2nd transformer is switched to and be connected in series, e-machine the 1st and the 3rd primary coil to the 1st transformer when standby is stopped power supply, and e-machine is powered to the 1st and the 3rd primary coil of the 1st transformer when work simultaneously.Therefore, not only can constitute the 2nd supply voltage that the 1st supply voltage that is connected in parallel or formation are connected in series to the 1st primary coil of the 1st and the 2nd transformer and the 2nd primary coil, and can be corresponding to the 3rd supply voltage in the scope of the 1st supply voltage and the 2nd supply voltage.At this moment, can be by the coil resistance of the primary coil of the 1st transformer being made the also little way of coil resistance than the primary coil of the 2nd transformer, make the influence of primary coil of the 1st transformer less, e-machine just can obtain the voltage of regulation in secondary coil one side of the 2nd transformer when standby.

Claims

1, a kind of supply unit of e-machine comprises:

The 1st transformer that possesses the 1st primary coil and the 2nd primary coil and secondary coil;

The 2nd transformer that possesses the 1st primary coil and the 2nd primary coil and secondary coil;

According to supply voltage, the 1st primary coil separately of described the 1st transformer and described the 2nd transformer and the 2nd primary coil switched to be connected in parallel or the company of series connection, obtain the switching device shifter of assigned voltage from each secondary coil one side of the described the 1st and the 2nd transformer; And

The e-machine of secondary coil that is connected in described the 1st transformer is when standby, the the 1st and the 2nd primary coil of described the 1st transformer is stopped the supply of described power supply, described e-machine is when work, and then the 1st and the 2nd primary coil to described the 1st transformer carries out the power supply apparatus for controlling of supply that described power supply is supplied with.

2, the supply unit of e-machine according to claim 1 is characterized in that:

On the 2nd primary coil of described the 1st transformer, be provided with tap, the 2nd primary coil is divided into the 3rd primary coil and the 4th primary coil;

If use described switching device shifter, according to described power source voltage the 1st primary coil of described the 1st transformer and the 3rd primary coil are switched to and to be connected in series, the 1st and the 2nd primary coil of the 4th primary coil of described the 1st transformer and described the 2nd transformer is switched to be connected in series simultaneously; And

If use described voltage supply control device, make described e-machine when standby just the 1st and the 3rd primary coil to the 1st transformer stop the supply of described power supply, and make described e-machine just carry out the supply of described power supply to the 1st and the 3rd primary coil of the 1st transformer in when work.

3, the supply unit of e-machine according to claim 2 is characterized in that: the coil resistance of the primary coil of described the 1st transformer is littler than the coil resistance of the primary coil of described the 2nd transformer.