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A voltage amplifier circuit, detection circuit and circuit detection method thereof

A technology of voltage amplifying circuit and circuit, which is applied in the direction of electronic circuit testing, amplifiers with semiconductor devices/discharge tubes, amplifiers, etc., can solve the problems that cannot accurately reflect the real-time changes of voltage signals, and achieve the effect of improving accuracy

Active Publication Date: 2022-07-29
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The voltage amplifying circuit, detection circuit and circuit detection method provided by the embodiments of the present invention mainly solve the technical problem: when the tiny voltage signal in the circuit to be tested is amplified in the prior art, the voltage change after the amplification processing The situation is not synchronized with the actual change of the voltage signal in the circuit under test, resulting in the problem that the real-time change of the voltage signal in the circuit under test cannot be accurately reflected by the amplified voltage

Method used

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  • A voltage amplifier circuit, detection circuit and circuit detection method thereof
  • A voltage amplifier circuit, detection circuit and circuit detection method thereof
  • A voltage amplifier circuit, detection circuit and circuit detection method thereof

Examples

Experimental program
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Embodiment 1

[0026] In order to solve the problem in the prior art that when the tiny voltage signal in the circuit under test is amplified, the voltage change after the amplification process cannot be synchronized with the actual change of the voltage signal in the circuit under test, please refer to figure 2 As shown, this embodiment provides a voltage amplifier circuit 20, including: a bias voltage circuit 22 and a differential amplifier 23, wherein the bias voltage circuit includes a voltage collection circuit 221, a voltage output circuit 223, and a voltage collection circuit 221 and a voltage output circuit 223. The voltage processing circuit 222 between the voltage output circuits 223; the voltage acquisition circuit 221 is connected to the electronic component 21 to be tested, and is used to collect the voltage difference between the two ends of the electronic component to be tested 21 and send it to the voltage processing circuit 222; the voltage processing circuit 222 is used for ...

example 1

[0029] The first example of this embodiment provides a voltage amplifying circuit 20, please refer to image 3 shown, image 3 It is a schematic block diagram of the structure of the voltage amplifying circuit 20 in the first example.

[0030] The voltage collection circuit 221 in this example includes a first voltage collection sub-circuit and a second voltage collection sub-circuit; the voltage output circuit includes a first voltage output sub-circuit and a second voltage output sub-circuit; the voltage processing circuit includes a first voltage processing sub-circuit The circuit 2221 and the second voltage processing sub-circuit 2222; the first voltage processing sub-circuit 2221 includes a first voltage drop module 22211 connected between the first voltage acquisition sub-circuit and the first voltage output sub-circuit, and a first voltage drop module 22211 The first voltage drop auxiliary module 22212 connected to the output end of 22211; the first voltage acquisition...

example 2

[0045] The second example of this embodiment also provides a voltage amplifying circuit 20, please refer to Figure 5 shown, Figure 5 It is a schematic block diagram of the structure of the voltage amplifying circuit 20 in the second example.

[0046] The voltage collection circuit 221 in this example includes a first voltage collection sub-circuit and a second voltage collection sub-circuit. It should be noted that the first voltage collection sub-circuit and the second voltage collection sub-circuit in this embodiment may be short-circuited The voltage output circuit 223 includes a first voltage output subcircuit and a second voltage output subcircuit; the voltage processing circuit 222 includes a first voltage processing subcircuit 2221 and a second voltage output circuit. The processing sub-circuit 2222; the first voltage processing sub-circuit 2221 includes a first voltage drop module 22211 connected between the first voltage acquisition sub-circuit and the first voltag...

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PUM

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Abstract

Embodiments of the present invention provide a voltage amplifier circuit, a detection circuit and a circuit detection method thereof. The voltage difference between the two ends of the electronic component to be measured is collected through a bias voltage circuit connected between the electronic component to be measured and the differential amplifier, and the collected voltage is collected. The voltage difference superimposed on the bias voltage is sent to the differential amplifier, and the differential amplifier amplifies and outputs the voltage difference superimposed with the bias voltage. Therefore, the voltage value sent to the differential amplifier will be greater than the actual voltage difference between the two ends of the electronic component to be tested, which solves the problem to a certain extent when amplifying the tiny voltage signal in the circuit to be tested in the prior art. The problem that the voltage change after amplification processing cannot be synchronized with the actual change of the voltage signal in the circuit under test improves the accuracy of reflecting the actual change of the voltage signal in the circuit under test by the amplified voltage.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a voltage amplifier circuit, a detection circuit and a circuit detection method thereof. Background technique [0002] In signal processing and control systems, amplifier circuits are often used to adjust, transmit, enhance, or scale signals. With the development of electronic technology, precise and accurate output values ​​are becoming more and more important, especially for small signal output circuits. More so. The voltage amplifying circuit is a device used to increase the voltage signal to amplify the weak signal. In the prior art, such as figure 1 The voltage amplifying circuit shown amplifies the tiny voltage signal in the circuit under test so that the voltage change in the circuit can be reflected in real time, figure 1 The two input terminals of the differential amplifier 101 are respectively connected to the input terminal and the output terminal of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/28G01R19/25H03F3/45
CPCH03F3/45076G01R19/25G01R31/2843
Inventor 张琪张胜杰
Owner ZTE CORP