This circuit was obtained from an American documentation of 1967. The circuit provides a 30 mA output current for driving standard Nixie indicator tubes at the time.
Found in a Popular Electronics from the 90s, this circuit generates signals from 2 Hz to 30 kHz in...
This decoder filter was found in a 1975 documentation. The integrated circuits can be 741. The...
This circuit simulates dusk by slowly dimming an incandescent bulb. It was found in the August 1998...