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Circuit for detecting resistance and drain voltage of same line

A voltage detection circuit and line resistance technology, applied in the direction of measuring current/voltage, measuring resistance/reactance/impedance, measuring devices, etc., can solve problems such as circuit voltage loss, insufficient load voltage, affecting equipment operation, etc., to prevent equipment damage Effect

Pending Publication Date: 2021-02-19
ZUNYI FENGHUA ELECTROMECHANICAL FITTINGS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the AC line, the resistance of the power supply line is often increased due to line damage, resulting in a loss of circuit voltage, and the final voltage received by the load is insufficient, which affects the operation of the equipment.

Method used

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  • Circuit for detecting resistance and drain voltage of same line
  • Circuit for detecting resistance and drain voltage of same line
  • Circuit for detecting resistance and drain voltage of same line

Examples

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Embodiment Construction

[0012] The technical solution of the present invention is further described below, but the scope of protection is not limited to the description.

[0013] A detection circuit for line resistance and leakage voltage of the same line; including a resistance detection circuit and a voltage detection circuit, the resistance detection circuit and the voltage detection circuit are connected to the leakage voltage signal Vin, and the resistance detection circuit inputs the single chip microcomputer according to the circuit resistance High and low levels, the voltage detection circuit judges its magnitude after filtering and isolating the leakage voltage signal.

[0014] Described resistance detection circuit comprises measured resistance R, and measured resistance is connected to the two poles of leakage voltage signal Vin, and its one end is connected with resistance R7, and the other end is grounded; The other end of resistance R7 is connected with resistance R4 and resistance R3 re...

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PUM

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Abstract

The invention provides a circuit for detecting the resistance and the drain voltage of the same line. The circuit comprises a resistance detection circuit and a voltage detection circuit, wherein boththe resistance detection circuit and the voltage detection circuit are connected with an electric leakage voltage signal Vin, the resistance detection circuit inputs high and low levels to a single-chip microcomputer according to the resistance of the circuit, and the voltage detection circuit filters and isolates the electric leakage voltage signal and then judges the magnitude of the electric leakage voltage signal. According to the invention, resistance and voltage in an alternating-current power supply circuit are checked in real time through the circuit, and when the resistance and the voltage are unqualified due to line damage, reminding is conducted, so that equipment damage caused by low voltage is prevented.

Description

technical field [0001] The invention relates to a detection circuit for line resistance and leakage voltage of the same line. Background technique [0002] In the AC line, the resistance of the power supply line is often increased due to line damage, resulting in a loss of circuit voltage, so that the voltage received by the load is insufficient, which affects the operation of the equipment. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a detection circuit for line resistance and leakage voltage of the same line. [0004] The present invention is achieved through the following technical solutions. [0005] The present invention provides a detection circuit for line resistance and leakage voltage of the same line; comprising a resistance detection circuit and a voltage detection circuit, the resistance detection circuit and the voltage detection circuit are connected to the leakage voltage signal Vin, and ...

Claims

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Application Information

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IPC IPC(8): G01R27/14G01R19/165
CPCG01R27/14G01R19/16547
Inventor 陈太茂
Owner ZUNYI FENGHUA ELECTROMECHANICAL FITTINGS CO LTD
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