4-tube reflex (T1662E)

This circuit that uses a loop antenna was found in a 1924 publication. The circuit has several supply voltages and sets of audio and RF coils.

| Clique na imagem para ampliar |

Electronic Slot Machine (CB6893E)
This digital electronic game circuit was found in a 1982 publication. It randomly draws the...
Logic Level Controlled Alarm (CB19899E)
This circuit can function as an output shield for microcontrollers, being compatible with TTL...
Current Amplifier (CB13747E)
We found this circuit in the 1977 RCA Solid State ICs. The circuit consists of a current amplifier with...