A special kind of power circuit

Published:2011/8/17 21:37:00 Author:Jessie | Keyword: power circuit | From:SeekIC

Although this circuit's structure is simple, it can produce three groupsof dc voltage fromtwo same secondary windings, andthey are + 5V, - 5V and + 12 v that certain microprocessors need. The characteristic of circuit is the connection way of D2 and D3, and they areconnected between E2, E3, andthese two groups ofAC power play a role of whole wave rectifier. In the positive half cycle, E2 charges for C2 through D2 , and current travelling b→C2(+)→C2(-)→D2→a; In a negative half cycle, E3 charges forC3through D3 , current travelling d→D3→C2(+)→C2(-)→C. Diodes D1 and D4are the general half wave rectifiers.



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