CN2185950Y

CN2185950Y - Multichannel silicon controlled commutating power supply

Info

Publication number: CN2185950Y
Application number: CN 94225312
Authority: CN
Inventors: 田建平
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-03
Filing date: 1994-02-03
Publication date: 1994-12-21
Anticipated expiration: 2004-02-03

Abstract

The utility model relates to a multichannel silicon controlled commutating power supply, comprising a transformer, a bridge controllable rectification circuit, a control circuit, and a sampling circuit. The utility model is characterized in that the bridge controllable rectification circuit is composed of a set of common anode diodes and two sets or more than two sets common cathode silicon controlled, and two or more than two DC output circuits are formed. The scheme can cause the silicon controlled commutating power supply to use one set of secondary winding of a transformer and share a set of diodes to realize the goal of multichannel controllable rectification output. The utility model has the advantages of simple structure, elements saving, cost reducing, and convenient operation.

Description

Multichannel silicon controlled commutating power supply

The utility model relates to a kind of device that alternating current is converted to direct current output.

Existing controlled rectification power supply mainly is to be made of transformer, controlled rectification circuit and control circuit.This rectifier power source generally only has the controlled output function of single channel, under the situation that a plurality of power consumption equipments of different nature are worked simultaneously, can not satisfy the needs of each power consumption equipment simultaneously.Often need to dispose a plurality of rectifier power sources, use both inconvenient, also uneconomical.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of and has multichannel output, each road output voltage can be regulated separately and cheap multichannel silicon controlled rectification power source.

Technical solution of the present utility model is: the multichannel silicon controlled rectification power source is to be made of transformer, controlled bridge rectifier circuit and control circuit, and its special character is that controlled bridge rectifier circuit is made up of the common cathode controllable silicon of one group of co-anode diode and two groups or more.Every group of silicon controlled negative electrode connects together, and its anode is corresponding respectively to be connected with the negative electrode of transformer secondary output winding and diode, constitutes two or more direct current output loops.Each Group of Silicon Controlled Rectifier correspondence is provided with control circuit.Adopt such scheme can make silicon controlled rectification power source only just can realize the purpose of multichannel controlled rectification output with one group of transformer time group winding and shared one group of diode.

Described controlled bridge rectifier circuit can be single-phase, three-phase or heterogeneous bridge rectifier.

Characteristics of the present utility model are: have multiple output function, each road output voltage can be regulated separately, and a rectifier power source can be simultaneously to many power devices that operating voltage is different; Simple in structure, saving element, easy to use, with low cost.

Fig. 1 is circuit theory diagrams of the present utility model.

Be described in further detail below in conjunction with accompanying drawing:

As Fig. 1, the multichannel silicon controlled rectification power source is to be made of transformer B, semi-controlled three-phase bridge rectifier circuit, control circuit and sample circuit.Semi-controlled three-phase bridge rectifier circuit is by one group of diode D ₁, D ₂, D ₃Constitute with two groups of controllable silicons.One group of controllable silicon SRA wherein ₁, SRA ₂, SRA ₃Negative electrode link together, its anode is through the winding T that boosts ₁', T ₂', T ₃' respectively with Secondary winding of transformer T ₁, T ₂, T ₃Be connected.Simultaneously also respectively with diode D ₁, D ₂, D ₃Negative electrode is connected, diode D ₁, D ₂, D ₃Anode link together, constitute an output loop; Another group controllable silicon SRB ₁, SRB ₂, SRB ₃Negative electrode link together, its anode respectively with Secondary winding of transformer T ₁, T ₂, T ₃Be connected, simultaneously also respectively with diode D ₁, D ₂, D ₃Negative electrode be connected, constitute another output loop.As long as increase the quantity of Group of Silicon Controlled Rectifier, just can increase output loop.The electric current and voltage sample circuit of each output loop is by resistance R ₁-3, shunt RD ₁, resistance R ₄-5, shunt RD ₂Constitute, it provides input signal to control circuit I, the II of corresponding setting with Group of Silicon Controlled Rectifier respectively, and control circuit I, II will be exported trigger impulse to controllable silicon according to the requirement of load 1,2 respectively.

Claims

1, a kind of multichannel silicon controlled rectification power source, it is made up of transformer, controlled bridge rectifier circuit and control circuit, it is characterized in that controlled bridge rectifier circuit is made up of the common cathode controllable silicon of one group of co-anode diode and two groups or more, every group of silicon controlled negative electrode connects together, its anode is corresponding respectively to be connected with the negative electrode of transformer secondary output winding and diode, constitutes two or more direct current output loops.