Friday, June 29, 2018

2N7002 2 Stage AF amp

This was so simple even I could do it. No math just pick some values to limit the current and set the bias. I'm looking at about 1 ma current draw.

 I mv in 500 mv out. 1 mv will rattle my earbud 1 volt is loud enough with my ceramic head phone.

The frequency response is well beyond my hearing range. I put it on a bread board and put a diode, coil and antenna on the input. It plays my local station.
I made this circuit using 2SK669's  before and it was a good build also.

No comments:

Post a Comment