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.
Found in an old Electronic Design, this circuit provides an output voltage that is the absolute...
Other operational amplifiers can be used in this circuit obtained from the manufacturer's own...
Frequency in this oscillator is controlled by a crystal. Any 1 MHz to 15 MHz can be used. The JFET can...