This circuit is from an 80's Radio Electronics. The circuit has several output options for 50 mA currents with load indicator through LEDs.
Found in an American documentation from the 90s, this sophisticated circuit is suitable for...
This Wheatstone bridge has a thermistor or NTC sensor, allowing the measurement of temperatures by...
This circuit shows how to get 5 V under low current from an operating amplifier 741. I got this...