I got a very "simple" project. Everybody knows, that PSU's are very expensive, if it comes to higher voltages at good current with a resulting power of over 500 Watts.
I would like to simply reconstruct the circuit of a few Switchmode PSU's just laying around and collecting dust. My plan is, to put the Primary sides in parallel and the Secondary correctly in row. That is very, very, simple and will definitely work. But as I want to have 900-1000 Watts as Output, I have to use more, than just the standart Switching transistors in this supplies, cause they definitely would burn down.
There are 2 Ways, to increase the power handling capability: But them in parallel, if I got the same types many times and simply add some Current limiting Resistors there, to not kill them. The other way is, to use my very own Power transistors.
I wonder, if the "IRFP 460 Power MOSFET" (500V at 20 Amps) would do this Job? I could also put some in series, if realy neccesary... The problem is, I realy, realy don't know, if the Switching speed of 18ns On/Off and Off/On would be fast enough for that kind of operation. What about that?
Thanks for letting me know.
Edit:
Hmmm... I would like to create my own PCB with that, but unfortunately I don't know, how to create the Primary side Circuit. There are many Schematics, but so confusing - looks almost like a Computer.
Is there any very simple Design for that?