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Sine wave generation circuit

A technology for generating circuits and sine waves, applied in electrical components, power oscillators, etc., can solve the problems of increased cost, low functional requirements for sine wave generating circuits, and higher prices, achieving simple structure, fewer circuit components, and high performance. Stable and reliable effect

Inactive Publication Date: 2012-06-13
SUZHOU HEXINMEI ELECTRONICS SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Various sine wave generating circuits can be seen everywhere in the prior art, but most of them have complex structures, complete functions, and relatively expensive prices. Stability, and in many occasions, the functional requirements for the sine wave generating circuit are relatively low, as long as it meets the requirements of stable sine wave generation

Method used

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Embodiment Construction

[0016] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0017] see figure 1 As shown, a sine wave generating circuit includes an operational amplifier U1, the output terminal of the operational amplifier U1 is grounded through the second resistor R2 and the first resistor R1 connected in series, and the second resistor R2 and the first resistor R1 The connection terminal of the operational amplifier U1 is connected to the non-inverting input terminal of the operational amplifier U1, and the inverting input terminal of the operational amplifier U1 is connected to an adjustable terminal pin of an adjustable resistor Rf, and one of the two fixed terminal pins of the adjustable resistor Rf The other is connected to the output terminal of the operational amplifier U1 through the third resistor R3, and the connection terminal between the adjustable resistor Rf and the third resistor R3 is taken...

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Abstract

The invention discloses a sine wave generation circuit. The sine wave generation circuit comprises an operational amplifier, wherein an output end of the operational amplifier is grounded through a second resistor and a first resistor connected in series, a connection end between the second resistor and the first resistor is connected with an in-phase input end of the operational amplifier, an anti-phase input end of the operational amplifier is connected with an adjustable end pin of an adjustable resistor, one of two fixed end pins of the adjustable resistor is grounded, and the other one is connected to the output end of the operational amplifier through a third resistor, and the connection end between the adjustable resistor and the third resistor is led out to be used as the output end of the sine wave generation circuit. The sine wave generation circuit is simple in structure, and steady and reliable in performance, and has popularization and use value.

Description

[0001] technical field [0002] The invention relates to a sine wave generating circuit. [0003] Background technique [0004] Various sine wave generating circuits can be seen everywhere in the prior art, but most of them have complex structures, complete functions, and relatively expensive prices. Stability, and in many occasions, the functional requirements for the sine wave generating circuit are relatively low, as long as it meets the requirements of stable sine wave generation. [0005] Contents of the invention [0006] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a sine wave generating circuit with simple circuit structure and stable and reliable performance. [0007] In order to achieve the above-mentioned technical purpose and achieve the above-mentioned technical effect, the present invention is realized through the following technical solutions: [0008] A sine wave generation circuit, which incl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03B5/20
Inventor 胡国良魏王江
Owner SUZHOU HEXINMEI ELECTRONICS SCI & TECH CO LTD
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