DC / DC converter circuit diagram composed of NE555

Published:2011/7/24 21:57:00 Author:Ecco | Keyword: DC / DC converter | From:SeekIC

This is a converter circuit without transformer. In the circuit, power transistors VT1 ~ VT4 form the bridge circuit with alternating switch working mode, and when VT1 and VT4 are turned on, VT2 and VT3 are turned off, and it has the opposite turn in the next cycle, that is, VT2 and VT3 are turned on, and VT1 and VT4 are turned off. Bridge's A and B output AC voltage with rectangular wave, which is converted into DC voltage by the rectifier bridge VDB. NE555 is the oscillator circuit, and the oscillation frequency is decided by the R1, RP1 and C1.



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