Rail to Rail Oscillator 555 (CB9099E)

Found in an Electronic Design from the 80s, this circuit generates a 500 Hz signal and can be used as a shield

Thyristor Tester (CB18222E)
The purpose of this 1985 circuit is to make the sound test of type 106 SCRs (MCR106, TIC106,...
Manual Bistable 4001 (CB24327E)
Using the CMOS 4001 we found this circuit in the October 1974 Radio Electronics magazine. The...
Signal Follower (CB14741E)
We found this circuit in a 1957 Raytheon transistor publication. The circuit can be assembled with...