High gain radio (CB21922E)

This simple 1 transistor radio was found in Raytheon's transistor manual. The transistor is germanium from the 60s.

Automotive Horn (CB16482E)
We found this circuit in a 1988 documentation, but the components used are still current. The...
Timer 4049 (CB15094E)
This simple timer uses one of the six inverter ports on a CMOS integrated circuit. Rx and Cx...
Power amplifier (CB8943E)
With an output power of 1.5 W under a 12 V supply, this circuit makes use of transistors that are...