LM3900 Amplifier (CB25165E)

This circuit with Norton operation is from an article in Radio Electronics magazine. The gain is given by the resistors.

Emergency Lighting (CB16490E)
This 1988 documentation circuit includes a charger and an inverter to power a small fluorescent lamp. The...
Receiver for power grid signals (CB9575E)
This circuit can act as a receiver for the transmitter of the previous circuit. We found it in...
5 V x 100 mA power supply (CB1158E)
The power source shown for powering for small TTL circuits was found on a Radio Electronics...