Using a MAX644 this circuit was found in the April 1989 issue of Radio Electronics magazine. The circuit is for a 5 V voltage and 50 mA current output.
This power supply was described in an article in Radio Electronics magazine from July 1968. The...
The integrated circuit used in this 80's application is not common today, but the design serves as...
Some delicate sensors such as reed-switches and even sensors made with small metal plates do not...