Found in an American documentation from the 90's, this circuit aims to light a neon lamp with voltages from 5 to 15 V. It is a small inverter that operates close to 15 kHz.
Found in a 1965 General Electric documentation, this circuit uses a zener diode to obtain the...
This oscillator with the PLL 4046B was obtained from a 90s Radio Electronics. The circuit...
This circuit works as a variable transformer that measures the power applied to a 110 V load (and...