This circuit is from an 80's Radio Electronics. The circuit has several output options for 50 mA currents with load indicator through LEDs.
This setting appears multiple times on the site from different sources. This is from a 2000 manual...
This circuit is a shield for microcontrollers and computers drivind high power loads. In the...
July 13, 2015 - Mouser Electronics, Inc. today announced that it has signed a global distribution...