This circuit was found in a PE Hobbyst Handbook of 1989. It uses a black light fluorescent of the time. Small fluorescent black light from 1 to 4 W can be used.
Once the voltage in the load is adjusted, this circuit keeps the voltage constant through the...
This 12 V to 110 V inverter with 100 W was found in a 1977 Signetics manual. The transformer must...
The oscillator shown generates a signal in the 4.5 MHz band and can be used for audio modulation of TV...