Found in a 90s Radio Electronics, this circuit is intended to drive a neon lamp from a 9 V source. The positive supply is made on pins 4 and 8.
We find this circuit in an American publication of 1978. The integrated circuit is the CMOS 4013...
This simulation shows how a transistor can be used as a switch turning on and off in the LED. The...
This circuit was found in General Electric's 1965 documentation. It appears elsewhere on the site....