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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Load sensor (CB7900E)
Found in Popular Electronics from the 90s, this circuit powers a warning lamp when the load is...
Complementary Tourch Switch (CB3852E)
The four gates of a 40111 IC are used in thes two-out circuit. The output chages their state in a...
Electro Stimulator TENS (CB16840E)
We found this circuit in a 1997 publication. It produces pulses of excitation whose intensity can...