Hi Johan, Bingo. You won as many washing mashines as you can carry :-) 73, Stefan Am 21.09.2012 15:59, schrieb Johan H. Bodin: Stefan Schäfer skrev 2012-09-21 00:04: https://dl.dropbox.com/u/19882028
Stefan Schäfer skrev 2012-09-21 00:04: Hi Stefan, I'd guess it is the power section of a PWM AM modulator for one of your switching QRO amplifiers? 73 Johan SM6LKM
I like the homebrew suff pictures :-) There is quite individual ways to build the equipment. Many use the copper plates as a board, i prefer the breadboard since i grew up with it :-) That's my today
LF, There's some progress on the AM modulator stage here. Now the step down converter works in general, i just have to optimise the PID parameters, i.e. regulator performance. Main parts of the stage