This charger was found in the February 1978 issue of Radio Electronics magazine. The circuit is for low current, only 150 mA, and has a 12 V transformer in the power source.
Suggested to power the previous circuit, this power supply was found in the December 1990 issue of...
This is a very useful autotransformer circuit on the bench. We found it in the September 1970...
This circuit was obtained in a 1960 documentation of General Electric. It is applied in the...