This MOSFET circuit for microphone applications was found in the December 1969 issue of Radio Electronics magazine. The transistors are uncommon today.
It is an ideal assembly to be implemented as work by students of digital electronics courses, as...
This circuit is from an1966 General Electric documentation. The Triac can be equivalent to 6 A or...
We found this circuit in an Argentine publication from 1973. The original transistor is made of...