We found this sensitive high input impedance voltage amplifier in the November 1970 Radio Electronics magazine. The circuit is powered by 18 V power source.
Found in a magazine from the '90s, this circuit uses an integrated circuit from the era that is...
We now present the 4013 in its bistable configuration, in which we use 3 flip-flops (1 and a half...
This simple receiver was found in a book on transistors from 1954. The coil determines the...