Half-cycle alternating current sampling circuit

A technology of alternating current and sampling circuit, applied in the direction of measuring current/voltage, only measuring current, measuring electricity, etc., can solve the problems of low sampling accuracy and complicated current sampling circuit, and achieve the effect of improving sampling accuracy and simplifying the circuit structure

Pending Publication Date: 2020-08-21
顺科电气技术(深圳)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The existing current sampling circuit is mo

Method used

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  • Half-cycle alternating current sampling circuit

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Example Embodiment

[0012] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0013] like figure 1 As shown, a half-cycle AC current sampling circuit includes an AC signal conversion and protection circuit, a half-cycle control circuit, a voltage divider clamp and a filter circuit. The output of the AC signal conversion and protection circuit is connected to the half-cycle control circuit. The input end of the circuit is connected, and the output end of the half-cycle control circuit is connected with the input end of the voltage divider clamp and filter circuit.

[0014] like figure 1 As shown, the half-cycle AC current sampling circuit further includes a processor, and the output end of the voltage divider clamp and filter circuit is connected to the processor.

[0015] like figure 1 As shown, the AC signal conversion and protection circuit includes a current transformer T1, a resistor R5, a Zener diode ZD1, and a Zen...

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PUM

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Abstract

The invention provides a half-cycle alternating current sampling circuit, which comprises an AC signal conversion and protection circuit, a half-cycle control circuit, and a voltage division clampingand filtering circuit. The output end of the AC signal conversion and protection circuit is connected to the input end of the half-cycle control circuit, and the output end of the half-cycle control circuit is connected to the input end of the voltage division clamping and filtering circuit. The beneficial effects of the invention are that: the circuit structure is simplified, and the sampling precision is improved.

Description

technical field [0001] The invention relates to a sampling circuit, in particular to a half-period alternating current sampling circuit. Background technique [0002] The existing current sampling circuit is relatively complex, and the sampling accuracy is low. Contents of the invention [0003] In order to solve the problems in the prior art, the present invention provides a half-period alternating current sampling circuit. [0004] The present invention provides a half-period AC current sampling circuit, including an AC signal conversion and protection circuit, a half-period control circuit, a voltage divider clamp and a filter circuit, the output end of the AC signal conversion and protection circuit is connected to the half-period The input end of the control circuit is connected, and the output end of the half-period control circuit is connected with the input end of the voltage dividing clamp and filter circuit. [0005] As a further improvement of the present inve...

Claims

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Application Information

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IPC IPC(8): G01R19/00G01R1/30
CPCG01R1/30G01R19/0092
Inventor 刘志业陆家珍
Owner 顺科电气技术(深圳)有限公司
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