This circuit was obtained from Popular Electronics from June 1978. It doubles the input DC voltage. Obtained current is very low, serving only for polarization circuits.
In the presence of the supply voltage of a 3 to 12 V circuit, this circuit causes the LED to...
Found in a 1970 documentation this circuit makes use of components still common in the market. The...
This circuit is based on the well-known PLL 567 and can operate at 100 kHz. The transformer can be...