Found in a 90s Elektor, this circuit is based on a Maxim integrated circuit of the time. The circuit supplies 5 V at its output with a maximum current of 50 mA.
Published in Radio Electronics magazine in March 1963, this circuit uses 4 transistors of the...
The LM11 operational amplifier is not common today. The circuit was obtained in the Linear...
This project was found in a 1988 documentation. The circuit intermittently activates an aquarium...