This circuit is better than the previous one in that the control is isolated by a transformer. The transformer has 110 or 220 V primary and 6.3 to 12 V secondary with 200 to 500 mA current.
If you have a common analog multimeter, you can increase its input resistance in the measurement of...
Found in a 1967 RCA manual, this circuit uses components from the era that can be replaced by modern...
August 2017 - Texas Instruments' new integrated circuit BQ25872, a 7-A keyed battery charger with...