Found in American documentation from the 1980s, this circuit has a diode feedback. At the exit we have an indicator LED. The LM3900 is a transconductance operational amplifier.
This circuit was obtained in an old American manual. The circuit is valid for any operational. The...
This circuit converts a positive CMOS supply voltage to a negative one. We found it in a 90s...
The TL431 integrated circuit consists of a programmable shunt regulator with an internal...