JPS62277066A - Voltage doubler - Google Patents

Abstract

PURPOSE:To eliminate the instability of an output due to temperature change observed in the amplification of an active element by using being a capacitor a passive element. CONSTITUTION:A signal to be amplified is applied to an input unit 1. Further, a first control signal is applied to close switches 2, 4, 6 to connect two capacitors 7, 8 in parallel with the input of a signal to be amplified. When the capacities of the capacitors 7, 8 are equal, the signal to be amplified are stored equally in both of the capacitors 7, 8. Then, the input of the first control signal is stopped, the switches 2, 4, 6 are opened, and a second control signal is applied instead to close switches 3, 5. Thus, the capacitors 7, 8 are connected in series, and a signal voltage of double of the signal to be amplified is output to a signal output unit 9.

Description

[Detailed description of the invention] 3. Detailed description of the invention [Field of use in the field of work] The present invention relates to a voltage doubler that amplifies the voltage of a signal.

[Conventional technology]

Conventionally, this type of voltage doubler has consisted of an operational amplifier, which is an active element, and an external resistor of an appropriate value.

[Problem that the invention seeks to solve]

The conventional voltage doubler using an operational amplifier described above has the disadvantage that because the operational amplifier is an active element using a transistor, etc., it is unstable with respect to temperature and it is difficult to improve the accuracy of the multiplication factor. There is.

[Means for resolving the problem] The voltage doubler of the present invention includes a plurality of voltage field product sections, first to third input/output terminals, and a plurality of voltage storage sections connected to the first input/output terminals. the second and third input/output terminals, or the second input/output terminal and the first input/output terminal;
and a switch+stage that can be switched and connected in parallel between the third input and output terminals, and the M-width signal input from between the first and third (or second and third) input and output terminals. The voltage is doubled and output from between the second and third (or first and third) input and output terminals.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a circuit diagram of a voltage doubler that is an embodiment of the present invention. Reference numeral 1 denotes an input section for receiving and sub-width signals. 2 to 6 are switches that operate in synchronization with the control signal, switches 2.4.6 open and close in synchronization with the first control signal, and switches 3 and 5 in synchronization with the second control signal. Open and close.

First, an amplified signal is applied to the input section 1. Furthermore, by applying the first control signal to close the φ switches 2, 4.6, the two capacitors 7.8 are connected in parallel to the input of the signal to be amplified, as shown in FIG. When the capacitances of the two capacitors 7.8 are equal, the voltage of the amplified signal is equally stored in both capacitors 7.8. Then, stop inputting the first control signal and turn on switch 2, 4.6'e15H.
Instead, a second control signal is applied to close switch 3.5. As a result, as shown in Figure 3, both capacitors 7.8
are connected in series, and a signal voltage twice as high as that of the input signal to be amplified is outputted to the signal output section 9.

Incidentally, changes in the amplified signal can be followed by repeatedly opening and closing the switches 2 to 6.

Furthermore, by adding the amplified signal to the output section 9 in FIG. 1, a signal having a voltage 1/2 times that of the amplified signal can be obtained at all input terminals 1.

Further, the present invention can be implemented even if the capacitances of the capacitors 7.8 are not equal.

Further, in the present invention, three or more capacitors may be connected in parallel or in series.

〔Effect of the invention〕

As explained above, by using a capacitor which is a passive element, the present invention has the effect of eliminating the instability of the output due to temperature changes observed in the 1' width of the active element.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIGS. 2 and 3 are circuit diagrams of the embodiment shown in FIG. and the switches 3 and 5 are closed. 1...Input section for amplified signal, 2-6...
・Switch, 7, 8...Capacitor, 11...
...Amplified signal output section. Agent Patent Attorney Susumu Uchihara Ni, - Haya / Figure! Figure 2 Figure 3!

Claims (1)

[Claims] A plurality of voltage storage units, first to third input/output terminals, and the plurality of voltage accumulation units are separated from the first input/output terminal and connected in series between the second and third input/output terminals, or Said second
switch means that can be connected in parallel between the first and third input/output terminals by being separated from the input/output terminals of the first and third (or second and third) input/output terminals; The amplified signal input from both ends is doubled and the second
and a voltage doubler that outputs from between the third (or the first and third) input and output terminals.