This circuit is from American documentation from 1970. It can be designed with a BC558 and for the operational, we can use equivalents. The FET can be the BF245.
This is the circuit of a small commercial amplifier from the 1970s from Philips Argentina. The...
June 2017 - New Honeywell MT MICROSWITCH Series can be ordered from Mouser Electronics for...
This simple circuit indicates the conductivity of materials through two LEDs and two LEDs are...