This circuit is from an 80's Radio Electronics. The circuit has several output options for 50 mA currents with load indicator through LEDs.
The sensor of this circuit is a common transistor and the trigger point is set on the trimpot or...
This Power supply sources from 500 to 1,000 mA according the transformar and was found in a...
This circuit uses a Norton operational amplifier to generate 1 kHz pulses with a 1 to 60...