MOSFET Stage (CB25576E)

This circuit shows how to use the 4007 MOSFETs in an amplifier stage. We found it in an Electronics Now issue from May 1993.

Delayed SCR trigger (CB19336E)
The circuit shown is from an old European publication. In it we have the way to activate a relay...
Audio Line Amplifier (CB4769E)
We found this circuit in a European publication from the 1990s. Transistors are still common types...
Active three-tone filter (CB20808E)
This circuit was found in an American documentation and can be added to common amplifiers of any...