Hello, I was recently working ona Class A amplifier, using one BJT NPN 2N3904 transistor and NPN Darlington pair transistor. The main problem I face is the current flowing from the collector of the first transistor to the base of the darlington pair. I want to get rid of this current, but when I add coupling capacitor between, it changes overall capacitance. The C3 acts as a low-pass filter and if I try to somehow change it, it will affect my signal very badly. Is there any way to get rid of the DC current from collector of the first transistor, or any improvements to my circuit and proper explanation?
Here's the schematic of the amplifier:
If you need more details, I'll be glad to provide you if you ask for anything.
Thank you in advance!
Here's the schematic of the amplifier:
If you need more details, I'll be glad to provide you if you ask for anything.
Thank you in advance!