Switching power supply fault simulator

Abstract

The invention relates to the field of switching power supply and discloses a switching power supply fault simulator. The simulator comprises a box, a switching panel arranged on the top of the box, a switching power supply circuit and a relay circuit both arranged at the bottom of the box, and a fan and a fault setting region both arranged at the side edges of the box, wherein a test hole for testing the voltage is formed in the switching panel; a plurality of fault points are arranged in the switching power supply circuit; the fault points are connected with the fault setting region by use of the relay circuit. The switching power supply fault simulator improves the waveform observation, fault analysis and fault resolution capabilities of a switching power supply system.

Description

technical field [0001] The invention relates to the field of isolating switches, in particular to a switching power supply fault simulation device. Background technique [0002] Switching power supply products are widely used in industrial automation control, military equipment, scientific research equipment, LED lighting, industrial control equipment and other fields, and switching power supply is generally a high-frequency part of failure, which is of great significance for fast and convenient fault diagnosis of switching power supply. [0003] At present, there are manual methods and automatic diagnosis methods for fault diagnosis of switching power supplies. [0004] The manual method is to use a multimeter or an oscilloscope to directly measure the voltage signal of the relevant node of the switching power supply, and judge the fault state of the switching power supply by analyzing the voltage waveform of the node. This method is cumbersome to operate and low in effici...

AI Technical Summary

Problems solved by technology

According to the traditional test method, when the designer wants to test a certain unit or component, it is necessary to make a special needle bed. Due to the need for accurate positioning between the board and the needle bed, various test fixtures and connecting devices are required, resulting in a diagnostic system. Complicated and cumbersome to operate

This method reduces the reliability of diagnosis due to problems such as test probe wear, poor contact, etc.

[0006] In addition, because the above-mentioned manual method and automatic diagnosis method both need to directly contact the circuit board of the switching power supply, if the switching power supply has been treated with insulation protection such as potting, and its test node is completely isolated from the outside world, it cannot be contacted for measurement.

Especially for some special application circuits, the contact diagnosis method will bring great interference to the original circuit, and even make the fault diagnosis impossible, which restricts the application of the above method

Images