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.
June 2017 - Bosch's new low G triaxial sensors can now be obtained from Mouser Electronics. The...
We found this circuit in the Electronics Experimenter Handbook magazine from 1993. L1 has 2 = 2...
This small fluorescent lamp inverter (up to 20 W) can be powered by 12 V battery and even less. The...