This circuit is from an old documentation, making use of an operational of the time. The circuit can be adapted to use modern components. The power supply must be symmetrical.
January 2017 - The new Schottky SDM02M30LP3 from Diodes Incoporated for 10 mA currents and 30 V...
This circuit activates a buzzer when the voltage applied to the input falls below a preset value in...
This circuit was found in an 80's General Electric documentation. The circuit uses components from the...