The figure shows a way to apply gain control to the LM3600 OTA. The circuit is from a Radio Electronics from July 1988.
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...