Schmitt Trigger 7400 (CB22419E)

This low hysteresis circuit was obtained from old documentation. The circuit must be powered by a voltage of 5 V.

Headphone Amplifier with the 741 (CB10248E)
This circuit was found in an English magazine from 1978, but it is still current, just change the...
Overtemperature Alarm (CB11839E)
This circuit causes a buzzer to emit an intermittent tone when the temperature sensed by the...
Null adjustment shield (CB4902E)
This microcontrolled null adjustment for operational amplifiers was obtained in a Linear...