Hi everyone and thank you all for the wealth of information here.
My electronics knowledge is average, but I'm trying to build myself a nice Megatron using a board from Birgir and would welcome all advice and criticism. I do have someone a lot smarter than me giving a bit of advice.
I'm using the KGSSHV power supply, even though I know it's not the number 1 choice anymore.. simply because I had a board and a lot of the parts already. It'll be 450v with offboard heat sinking.
So the questions: The board uses 12vdc for the front end, so I planned on switching the 7815 to a 7812 and increasing the 16-0-16 output of the transformer to 750mA. Is that a logical approach ?
Secondly, the main transformer.. the BOM says use 420v secondaries for 450v, but someone here suggested that was too high for a Megatron build. My buddy has suggested that in order to ease the work and heat from the FQPF8N80Cs, I could probably get away with 360v secondaries. Mains voltage where I live (Western Australia) is 250+, so his suggestion was a custom transformer with Primary: 230v/250v. Secondaries: 2 x 360v/200mA, 16-0-16v/750mA.
Thanks in advance for any input, and thanks again for the great forum.. especially Kevin and Birgir for all their efforts in helping dummies like me build themselves a decent amp.
Is possible add Tachyonix's control chip as option to control volume with next version PCBs?