This HeNe laser power supply was found in the March 1989 issue of Radio Electronics magazine. This power supply generated a few thousand volts for gas ignition.
We show an oscillator that produces rectangular TTL signals based on inverters. Inverters can also be...
I got this circuit from a magazine in 1967. The magazine no longer exists, but the circuit that...
This egg timer has been found in an English magazine that no longer exists in 1982. The...