Capacitor energy-storage type silicon-controlled switch power supply

Abstract

A capacitor energy-storage type silicon-controlled switch power supply is designed to resolve the technical problems in the prior art of complex structure, poor stability, low efficiency, large size, difficulty in modularization and the like. The switch power supply is mainly formed by a capacitor charging and silicon-controlled trigger circuit, a power pulse generation circuit and a rectification filtering stabilizing circuit. The upper half circle of electric supply is utilized to charge an energy-storage capacitor, and the lower half circle of the electric supply is utilized to generate silicon-controlled trigger signals to enable the energy-storage capacitor to be quickly discharged through a loop formed by a primary coil of a pulse transformer and controlled silicon, generate pulse voltage in a secondary coil of the pulse transformer and form a stable direct current power supply through the rectification filtering stabilizing circuit. Compared with other parts, the switch power supply has small element power consumption and is quick in pulse ascending and descending speed and high in energy conversion efficiency due to the fact that the power pulse generation circuit adopts the controlled silicon and the energy-storage capacitor as core parts. The switch power supply has the advantages of being energy-saving, low in cost and ultrathin and facilitating modularization.

Description

technical field [0001] The invention relates to a DC stabilized power supply, in particular to a capacitive energy storage type thyristor switching power supply, which is mainly used in the technical fields of electronics, instruments and meters. Background technique [0002] At present, most of the power devices used in switching DC regulated power supplies are triode transistors or bipolar transistors or field effect transistors. It has a large power loss of the power device itself, generally requires a relatively complicated control circuit, the price is high under the same power, and the power of a single device is relatively small. In order to improve the power conversion efficiency of the pulse transformer and reduce the volume of the pulse transformer, It needs to work at a higher frequency state, which in turn leads to disadvantages such as increased power loss of the rectifier filter circuit. The existing thyristor switching power supply also has disadvantages such...

AI Technical Summary

Problems solved by technology

It has a large power loss of the power device itself, generally requires a relatively complicated control circuit, the price is high under the same power, and the power of a single device is relatively small. In order to improve the power conversion efficiency of the pulse transformer and reduce the volume of the pulse transformer, It needs to work at a higher frequency state, which in turn leads to disadvantages such as increased power loss of the rectifier and filter circuit

The existing thyristor switching power supply also has disadvantages such as relatively complicated circuit structure

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