Found in a 1969 neon lamp publication, this circuit provides two voltages under very-low currents. Neon lamps are types of the time.
This circuit uses two sensors that are placed at the intersection of a miniature railroad, causing the LED...
This zero crossing detector is of the 1993 Motorola Linear Interface ICs. The source is...
Recommended by 90s a Radio Electronics, this unit uses a transformer with a 70 V x 5 A secondary,...