CW tone generator (CB21673E)

This telegraphy circuit generates an audio tone from a pure RF carrier. We found it in a publication by Gernsback from 1960.

NOR function with the 4011 (CB16068E)
For the NOR or no-OR function (negative of the OR function) we take the previous configuration (CB15067E)...
Laser Motor Control (CB25981E)
We found this circuit in the October 1996 Electronics Now magazine. The circuit uses LDRs as...
Temperature Controller (CB6016E)
We find this circuit in an American 80's documentation. It makes use of IC sensor which is mounted...