We found these circuits in a 90s Radio Electronics. In them, we have the way to turn a load on and off using pressure switches. The circuit can be used with other types of direct current load.
Indicated for activation by microcontrollers, this circuit was found in the Radio Electronics...
We found this circuit in an English publication in 1991. The circuit can be assembled with...
This tuner circuit was found in an old English documentation. The JFET can be any general purpose...