Hello,here's my 1.2kW SMPS built from junk parts.It's really simple and good.
SMPS is in fullbridge,uses 4 same switching transistors,you can use 13007,13009,2sc2526,BUxxx,BUTxx,BUVxx,and more....
This is self osc. SMPS
For power transformer you can use two EE33 in series,one ETD49,or other core which you have.
With this smps I power two 500W amps,and work wery good.
Other power can be achieved,only change transistors.
BDT's is from CFL lamp (or electronic halogen transformer),small toroid core.
I'll attach half bridge version,which have 500W(dependent on transistors and output transformer).
Here's schematic and pcb:
View attachment HB i H ee33.pdf View attachment HB i H 2.pdf View attachment HB i H.pdf
One pcb is for flyback transformer core,and other for two EE33 or EI33 (or EE/EI28).
Peaks on Ube is for turn on and off
SMPS is in fullbridge,uses 4 same switching transistors,you can use 13007,13009,2sc2526,BUxxx,BUTxx,BUVxx,and more....
This is self osc. SMPS
For power transformer you can use two EE33 in series,one ETD49,or other core which you have.
With this smps I power two 500W amps,and work wery good.
Other power can be achieved,only change transistors.
BDT's is from CFL lamp (or electronic halogen transformer),small toroid core.
I'll attach half bridge version,which have 500W(dependent on transistors and output transformer).
Here's schematic and pcb:
View attachment HB i H ee33.pdf View attachment HB i H 2.pdf View attachment HB i H.pdf
One pcb is for flyback transformer core,and other for two EE33 or EI33 (or EE/EI28).
Peaks on Ube is for turn on and off
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