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Isolation Amplifier and Its Proportional Controlled Source and Integral Controlled Source and Mutual Coupler

An isolation amplifier and operational amplifier technology, applied in the fields of analog signal processing devices, electronic circuits, and circuits, can solve the problems of poor high-frequency performance and dynamic performance, inability to convert DC signals, and difficulty in integration, and achieve a wide range of practical value, Low cost and intuitive effect

Active Publication Date: 2022-06-28
朱嘉慧
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A common method to achieve isolation coupling is to use magnetic field isolation coupling, such as transformers and transformers, etc., but the DC signal cannot be transformed, and the high-frequency performance and dynamic performance are not good due to the existence of magnetic flux leakage; the voltage and current of the Hall element are used Although the transmitter can process DC signals, the problems of poor high-frequency performance and dynamic performance caused by magnetic flux leakage still exist, and such devices are large in size, heavy in weight and very difficult to integrate
Another approach is to use a photocoupler, which is a signal unidirectional device and has a large nonlinearity

Method used

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  • Isolation Amplifier and Its Proportional Controlled Source and Integral Controlled Source and Mutual Coupler
  • Isolation Amplifier and Its Proportional Controlled Source and Integral Controlled Source and Mutual Coupler
  • Isolation Amplifier and Its Proportional Controlled Source and Integral Controlled Source and Mutual Coupler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0116] Voltage-Type Isolation Amplifiers and Current-Type Isolation Amplifiers

[0117] Inverting-inverting dual output, inverting-in-phase dual output, in-phase-in-phase dual output, in-phase-inverting dual-output voltage isolation amplifier schematic diagram Figure 12a , 12b , 12c, 12d. The dual output voltage isolation amplifier consists of two dual phototransistor receiving photocouplers OD with the same parameters P , OD N and two equal-value current-limiting resistors R X composition, two optocouplers OD P and OD N The light-emitting diodes are respectively connected in series with a current limiting resistor R X Then connect them in series, both ends are respectively connected to the 0th group of independent positive and negative symmetrical dual power supplies +V0 and -V0, and the common terminal is used as the input terminal u of the dual-output voltage isolation amplifier. i Relative to the 0th group of independent positive and negative symmetrical dual power...

Embodiment 2

[0123] Single Output Proportional Controlled Source and Dual Output Proportional Controlled Source

[0124] The proportional controlled source is composed of an inverting isolation amplifier or a non-inverting isolation amplifier, an input control circuit and an output conditioning circuit. The input control circuit from the input port to the isolation amplifier includes a current-type control circuit and a voltage-type control circuit. The isolation amplifier is connected to the output port. There are two types of output conditioning circuits: voltage type conditioning circuit and current type conditioning circuit.

[0125] The single output proportional controlled source has one control input port and one power output port, and there are four types of current control voltage source, current control current source, voltage control voltage source and voltage control current source.

[0126] The principle block diagram of the current-controlled voltage source using the invertin...

Embodiment 3

[0140] Single Output Integral Controlled Source and Dual Output Integral Controlled Source

[0141] The single-output integral controlled source has a control input port and a power output port, and has four types: current integral voltage source, current integral current source, voltage integral voltage source and voltage integral current source.

[0142] The principle block diagram of the current integration voltage source using the inverting isolation amplifier and the non-inverting isolation amplifier is as follows Figure 26a , 26b shown. The current integration voltage source is obtained by replacing the operational resistor of the current control voltage source with an operational capacitor. The input-output relationship is:

[0143]

[0144] The principle block diagram of the current integration current source using the inverting isolation amplifier and the non-inverting isolation amplifier is as follows Figure 27a , 27b shown. The current integration current ...

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Abstract

The invention relates to an isolation amplifier, its proportion controlled source, its integral controlled source and a mutual coupler, belonging to a circuit, an electronic circuit and an analog signal processing device. The isolation amplifier is composed of two diode or triode receiving photocouplers with the same parameters. It adopts a complementary symmetrical structure and has excellent characteristics of amplifying DC signals, high isolation performance, positive and negative symmetry of AC signals, and fast response; proportional controlled source and integral The controlled source is composed of an isolation amplifier and an operational amplifier, and the central core circuit is mirror-symmetrical, and has high isolation performance, high linearity and high operational precision, and the input and output characteristics of an ideal controlled source; the mutual coupler is composed of a controlled source, Due to the complementary symmetrical structure of the isolation amplifier and the mirror symmetrical structure of the controlled source, the mutual coupler has excellent performance and can realize various transformation functions. Proportional controlled sources, integral controlled sources and mutual couplers are used in single-phase, two-phase and three-phase circuits to achieve rich isolation, control, calculation and conversion functions.

Description

technical field [0001] The invention relates to an isolation amplifier, its proportional controlled source, integral controlled source and mutual coupler, in particular to an isolation amplifier constructed by using a photocoupler, its proportional controlled source, integral controlled source, and a controlled source The constructed mutual coupler belongs to a circuit, an electronic circuit and an analog signal processing device. Background technique [0002] With the development of society and technology, the application of circuits has become more and more common, but at the same time, the circuits have become more and more complex, from simple couplet circuits, series-parallel conversion circuits, triangular-shaped delta circuits to super complex circuits, from single-port circuits. network, two-port circuit network to multi-port circuit network, from single-phase circuit, two-phase circuit, three-phase circuit to polyphase circuit, from static circuit, steady-state circ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/56
CPCG05F1/56
Inventor 朱明朱嘉慧
Owner 朱嘉慧
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