This battery-powered micropower supply was shown in Radio Electronics magazine in 1991. The maximum current is 170 mA. and the integrated circuit is the MAX655 from Maxim.
This configuration similar to many of this site was found in 1965 General Electric documentation. Modern...
In this circuit found in the December 1972 Radio Electronics magazine. R can be from 1k to 22k,...
The circuit shown is from the National Semiconductor Linear Applications Handbook of 1994. using...