Audio signal follower (CB10028E)

This RF and audio follower applies its signals to a small amplifier. The FET can be any general-purpose type. The power can be between 6 and 9 V.

Common Mode High Reject Video Amplifier (CB9419E)
Found in a 90's EDN, this circuit has a 45 dB common mode rejection. The pass band is 60 MHz. The...
Light cut Detector (CB4954E)
This 80's circuit uses a light-sensitive SCR or LASCR and a one-sided silicon switch SUS, uncommon...
Memory sensor amplifier (CB6809E)
This circuit is from a 1967 documentation. It consists of a sensor for memories used at the time....