Bistable 7400 (CB22408E)

The figure shows how to connect a 7400 to obtain a bistable configuration. The circuit must be powered with 5 V.

Unijunction Organ (CB13520E)
This traditional configuration found in a Radio Shack document can use 2N2646. More keys can be...
Turntable Circuit (CB24357E)
This is the circuit of a turntable from the 1970s. We found it in a repair article in the December...
Water Operated Relay (CB24075E)
Using the CA3018 released at the time, this circuit was found in the August 1970 Radio Electronics...