Switching circuit (CB9226E)

This circuit was found in a 90's EDN. It can be implemented with either TTL or CMOS logic and used as a shield.

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3,000 W Dimmer (CB7207E)
Suggested by Philips in a 1970 publication, this circuit uses components from that time. No...
Picoammeter (CB9661E)
This circuit is designed to measure very weak currents, in the order of picoamperes. We found it...
Common emitter amplifier stage (CB9061E)
This circuit was found in an American documentation from the 80's. The transistor is a...