Found in a 1966’s General Electric documentation, this circuit uses a triple diode from the time. The output current is 5 mA. It serves as a voltage reference.
Other amplifiers of the series like the MC3301, MC3401 and LM2900 can be used in this circuit. We found...
This interesting circuit of an ancient American publication makes the pattern of an exclamation mark...
In this circuit the LED lights up when the input voltage exceeds the value set in the trimpot. The circuit...