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Negative feedback circuit

A negative feedback circuit and resistor technology, applied in the field of circuits, can solve problems such as single function, high cost, and many electronic components, and achieve the effect of simple circuit structure, few electronic components, and low cost

Inactive Publication Date: 2019-03-01
葛扣香
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, most of the negative feedback circuits have complex structures, many electronic components are used, the functions are single, and the cost is high

Method used

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  • Negative feedback circuit

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Embodiment Construction

[0009] like figure 1 As shown, a negative feedback circuit includes: a first resistor R1, a second resistor R2, a first capacitor C1, a second capacitor C2 and a transistor Q; the base of the transistor Q is directly grounded after connecting the first capacitor C1 and the power supply U1 ; The collector of the triode Q is connected to the power supply E after connecting the second resistor R2 c terminal; the emitter of the transistor Q is directly grounded; one end of the first resistor R1 is connected between the first capacitor C1 and the base of the transistor Q, and the other end is connected between the second resistor R2 and the collector of the transistor Q; the second One end of the capacitor C2 is connected between the second resistor R2 and the collector of the transistor Q, and the other end is connected to the power supply U0 and directly grounded.

[0010] The first resistor R1 is 91KΩ, and the second resistor R2 is 2KΩ. The first capacitor C1 and the second ca...

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Abstract

The invention discloses a negative feedback circuit. The circuit includes a first resistor R1, a second resistor R2, a first capacitor C1, a second capacitor C2 and a transistor Q. The base of the transistor Q is connected with the first capacitor C1 and a power source U1 and then directly grounded. The collector of the transistor Q is connected with the second resistor R2 and then connected to apower supply Ec end. The emitter of the transistor Q is directly grounded. One end of the first resistor R1 is connected between the first capacitor C1 and the base of the transistor Q, and the otherend of the first resistor R1 is connected between the second resistor R2 and the collector of the transistor Q. One end of the second capacitor C2 is connected between the second resistor R2 and the collector of the transistor Q, and the other end of the second capacitor C2 is connected with a power supply U0 and then directly grounded. The circuit has the advantages that a circuit structure is simple, costs are lower, and the number of used electronic components is smaller.

Description

technical field [0001] The invention relates to the technical field of circuits, in particular to a negative feedback circuit. Background technique [0002] In the prior art, most negative feedback circuits have complicated structures, many electronic components are used, single functions, and high cost. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a negative feedback circuit with simple circuit structure, low cost and less electronic components used. [0004] In order to solve the above-mentioned technical problems, the present invention provides a negative feedback circuit, comprising: a first resistor R1, a second resistor R2, a first capacitor C1, a second capacitor C2 and a transistor Q; the base of the transistor Q is connected to the first capacitor C1 and the power supply U1 and directly grounded; the collector of the triode Q is connected to the second resistor R2 and then connected to the power supp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H11/46
CPCH03H11/46
Inventor 葛扣香
Owner 葛扣香
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