Quote from: J M Fahey on March 15, 2016, 07:50:18 PMI can't tell yet since I left it at home but the amp is a karaoke stereo amp using two TIP41's and two TIP42's
Tell us: what was the original power amp rating?
if a 30/60W MI amp or, say, 25+25W Hifi, fine.
The traffo has 3 output winding, 18-0-18, 0-9, and 0-5-20. Looking at it, I think it can power at least two 100W channels (I doubt if it's RMS since the amp's cheap)
Quotecan i build it on a solderless breadboard (except the PS and the chipamp itself)
You might build it on the table, un cased, just 1 channel first, and test it.
Then you decide whether to build it 25W or 25+25 .
QuoteI'll do it later at home
measure transformer EI iron stack, please use mm if at all possible.
Should I go with panel mount fuse holder for the mains fuse and pcb mount for those between the ps and the powr amp?