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Insulation detection circuit, main board and related device

A technology for detecting circuits and circuits, which is applied in the direction of testing circuits, testing dielectric strength, power supply testing, etc., and can solve problems such as complex measurement methods

Active Publication Date: 2020-08-21
SHINRY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The unbalanced bridge method needs to control four switches and measure four voltages to calculate the insulation resistance value. This measurement method is complicated.

Method used

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  • Insulation detection circuit, main board and related device
  • Insulation detection circuit, main board and related device
  • Insulation detection circuit, main board and related device

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Embodiment Construction

[0030] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0031] Each will be described in detail below.

[0032] The terms "first", "second", "third" and "fourth" in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "include" and "have", as well as any variations thereof, are ...

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Abstract

The invention discloses an insulation detection circuit, which comprises an alternating current power supply, a filter circuit and a wave testing circuit, and is characterized in that the wave testingcircuit comprises a first sub wave testing circuit and a second sub wave testing circuit; the alternating current power supply is connected with the filter circuit, and the filter circuit is connected with the first sub-wave-testing circuit and the second sub-wave-testing circuit. An alternating current signal generated by an alternating current power supply passes through the filter circuit to generate a first current signal, the first current signal flows to the first sub-wave-testing circuit and the second sub-wave-testing circuit, a first voltage is generated in the first sub-wave-testingcircuit, and a second voltage is generated in the second sub-wave-testing circuit. The embodiment of the invention can simplify the design of the insulation detection circuit.

Description

technical field [0001] The present application relates to the technical field of circuit structures, in particular to an insulation detection circuit, a main board and related devices. Background technique [0002] Electricity is an essential element in life. In some occasions where there is no power supply or where it is required that the power supply cannot be interrupted, it is inevitable to use some equipment to convert other energy sources into alternating current to supply power to the electrical equipment, such as Uninterruptible Power System / Uninterruptible Power Supply (UPS), Car inverter. In order to avoid electric shock accidents caused by insulation failure when using these devices, it is necessary to detect the insulation performance of the AC power supply and the casing, and cut off the power supply in time when the insulation failure is found. At present, the common method of insulation detection circuit is the unbalanced bridge method. The unbalanced bridg...

Claims

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Application Information

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IPC IPC(8): G01R31/14G01R31/42
CPCG01R31/14G01R31/42
Inventor 唐林胡定高赵德琦吴壬华
Owner SHINRY TECH
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