This circuit implements a 3-way control, with outputs in A, B and C, using CMOS integrated circuits. I found this circuit in an old publication from 1978.
Connected to the output of a small amplifier or receiver, this circuit triggers a relay in the...
This oscillator version is from an RCA documentation from the 1970s. Transistors support modern...
We found this circuit in an American documentation of the 80's, being indicated for the test of...