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.
We found this circuit in an old publication on oscilloscopes. Its purpose is to observe the Ie /...
This circuit was obtained in an American publication of 1989, but the components are current. The...
April 2017 - Mouser Electronics already has the MAX4007 from Maxim Integrated in its inventory, an...