TTL binary adder (CB22430E)

This circuit is based entirely on TTL gates. The circuit must be powered by a voltage of 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...