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Diverging and amplifying circuit with single power supply

An amplifying circuit and single power supply technology, which is applied in the electronic field, can solve the problems of large amount of changes, achieve low design and production costs, easy device selection, and improve the accuracy of the reference voltage

Inactive Publication Date: 2012-05-16
GUIZHOU HUAYANG ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By improving the conversion accuracy of the A / D analog-to-digital converter, this method can meet the requirements of the system to diverge and amplify the input signal, but it must be equipped with a high-precision reference power supply to achieve the effect, and the amount of change is too large

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  • Diverging and amplifying circuit with single power supply
  • Diverging and amplifying circuit with single power supply

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing and preferred embodiment, to the specific embodiment, structure, feature and effect thereof of the single power supply diverging amplifying circuit that proposes according to the present invention, describe in detail as follows:

[0023] As shown in the attached figure, the single power divergent amplifier circuit, the input voltage Vin is connected to the non-inverting input terminal of the operational amplifier U2B through the resistor R1, the non-inverting input terminal of the operational amplifier U2B is grounded through the resistor R2, and the inverting input terminal of the operational amplifier U2B is connected to the operational amplifier U2B The output of the amplifier U2B is connected. The positive power supply terminal of the operational amplifier U2B is connected to the +10V reference voltage, and the negative power supply terminal of the operational amplifier U2B is grounded.

[0024] The +10V reference volta...

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Abstract

The invention discloses a diverging and amplifying circuit with a single power supply. The circuit comprises matched resistors R1-R12 and operational amplifiers U1 and U2, and is characterized in that an input voltage Vin is connected with the same phase input end of an operational amplifier U2B through a resistor R1; the same phase input end of the operational amplifier U2B is grounded through a resistor R2; the inverted input end of the operational amplifier U2B is connected with the output end of the operational amplifier U2B; the positive power supplying end of the operational amplifier U2B is connected with +10V reference voltage; and the negative power supplying end of the operational amplifier U2B is grounded. The multiple of the diverging and amplifying can be adjusted flexibly through the matching of the resistors, and the circuit structure is simple and the cost of design and production is low.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a single power supply diverging amplifier circuit. Background technique [0002] Signal divergence amplification refers to amplifying the input signal according to the set amplification factor based on a specific voltage. In the prior art, the implementation of signal divergence amplification mainly adopts the following methods: [0003] Method 1: Subtract a specific voltage from the input signal through a differential amplifier circuit and amplify and output according to the set amplification factor. Although this method can achieve divergent amplification of the input signal, it must use a DC-DC power supply module to generate positive and negative power supplies or adjust software, which is expensive. [0004] Method 2: Amplify the input signal several times to the set input voltage range of the AD digital-to-analog converter and then output it. This method increases th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/45H03F1/30
Inventor 林朝勇
Owner GUIZHOU HUAYANG ELECTRICAL
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