Wednesday, March 09, 2011

9V output switching power supply

By using the circuit you do not bother to roll  up a transformer that is used to reduce voltage AC 220V to 7V ,9 V or 12V, etc. When using a large transformer we will find it hard to make transformator. by rolling hundreds or even thousands of times roll. But if you use this circuit a little just enough to roll trafo not to small, and its be relatively small.
simple switching power supply
Part List :
R1________________________________680K
R2________________________________47K
R3________________________________100R
R4________________________________1K
R5________________________________1R
D1,D2,D3,D4,D7,D8,D9,D10__________1N4007
D5,D6_____________________________1N4148
C1________________________________2u2F 400V
C2________________________________2n2
C3________________________________47uF 25V
C4________________________________10n
C5________________________________470uF / 16V
Q1________________________________MJE13003
Q2________________________________S8050

This is construction of transformer. For the first toll 220 times , then after that wrap right on top of L2 , and L3 on L2.
switching power supply transformer

Electronic Circuit is a good site for hobbyist also who would like to try DIY because it shared good circuits. If you have a personalized circuit requirement you may feel free to request it through the comment box or contact me.


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