SCR mechanical drive (CB6572E)

This contact or reed switch actuation was found in a 1964 Electronic Design. The circuit can be used with sensors and the triac is load dependent.

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Motor Speed Control (CB12048E)
This control for motors with current up to 1.5 A was obtained in a 1989 publication, but it can...
Hysteresis-free Schmitt Trigger (CB5963E)
This circuit is from an old documentation. However, it can be designed based on modern transistors...
Touch Head or Tail (CB13487E)
We found this circuit in a 1976 documentation, but it can still be easily assembled using BC548...