Found in a 90s Electronic Design, this circuit can be used as a shield in current projects. The circuit provides three levels of signals for triggering loads.
Found in American documentation from 1969, this circuit operates in the frequency range 10 to 150...
This circuit uses a current regulator from the 90's. This component is uncommon nowadays. The...
This power source was found in a 1968 Electronics World. The transistors are from that time. The...