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 is the conventional configuration of an astable multivibrator with operational, found in a...
This 1969 Electronics World power supply has 5 V to power digital circuits and a 170 V output for...
The Texas TL783 integrated circuit is a three-terminal high voltage regulator with a wide range of...