Power-supply of adjustable DC steady voltage

Published:2011/5/23 7:55:00 Author:Ariel Wang | Keyword: adjustable, DC , steady voltage | From:SeekIC

Adjust the resistance of RP.It can change the conduction angle of VT. Then it can change the power-supply of DC steady voltage of input voltage and output voltage. The 220V AC voltage is adjusted through electronic voltage regulation switch，dropped down through T，commutated through VD1-VD4 and filtered through C2，C3. Then it generates DC voltage needed. Put S to position 1 ,VD3 and VD4 make up a full wave commutated circuit. At this time the power-supply of DC steady voltage is low voltage output.Put S to position 2 ,VD1-VD4 make up a three-phase-bridge rectifier circuit. At this time the power-supply of DC steady voltage is high voltage output.



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