All, I am converting a TH430 based Class C amplifier to Class AB. The basic circuit is a traditional single stage layout with input and output binocular transformers. Things are proceeding, however t
Hi Dan, Such extreme noise would be strongly driving the transistors, fully into saturation! Are you sure you really have that much noise on the bias? That's a big mistake. To bias bipolar transistor
Manfred, Thank you again for your input. The insight into the bias circuit was very helpful. I replaced the curve tracer with a variable power supply; that improved the response considerably. The pla
Hi Dan! In that case it's good to use pretty large diodes, so they can take a large current while their voltage drop is still relatively low. I typically use 3 ampere rectifier diodes for biasing 30