Radio Theory and design

This is my new go to amp. ( I may remove the first stage.) It is almost to high gain. The one I made last night was great BUT I added a sw...

The ground plane is very important and a good practice is to use a double sided board. Making one foil +Vcc and the other -Vcc. So what do y...

I built the circuit from 2 post earlier and it worked very well. I thought I would try it in JFET. This is what I came up with.

The question is what would it sound like. My best guess is it would be good since the circuit was presented in magazines and data books bu...

 The third line down is the transformer I wanted but I didn't want the $66 price tag, ouch!! I shopped at Fair radio a little a...

The circuit asked about The sim. I added C3 and R4 so I could read the output with a zero reference. .1mv in 5mv out. The transformer i...

I'm going to piece together an audio amp to drive my Low Z earbud and my Hi Z earbud without any math other than in my head (guessing). ...