Locked solid state relay (CB8394E)

We found this circuit in a 90s Electronic Design. The components admit current equivalents. The circuit can act as a shield.

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Three-phase motor control (CB7268E)
Suggested by Sprague in the 1980s documentation, this circuit can control three-phase AC motors....
FET Switch (CB6725E)
This switched filter was found in the 1969 documentation. The FET should be current-matched and eventually...
Double LED CMOS Flasher (CB5206E)
The frequency of the blinking of this circuit is given by the capacitor that can have its value...