This commercial receiver for the mid-wave range of the 1960s was found in Japanese documentation at the time. The supply is 9 V, and the configuration is superheterodyne type.
This circuit, found in 2002 documentation, triggers LEDs when a phone call is received. The LEDs...
It is an ideal assembly to be implemented as work by students of digital electronics courses, as...
This control circuit for direct current motors uses a 741 and an operational one of unusual power...