Dimmer without flicker (CB7218E)

This circuit was found in Signalite documentation from the 1960s. The circuit uses a pulse transformer whose characteristics have not been provided.

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Infrared Detector (CB1560E )
The circuit shown in the figure can be used to detect the operation of infrared sources whose...
Sampling and Retention (CB20151E)
This circuit is from a factory manual from the 80s. The circuit can be implemented with more...
Logic Drive of the 7805 (CB25236E)
This circuit for the logic control of the 555 in a power supply was found in the October 1989...