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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Debouncer (CB9277E)
This circuit was found in a 1967 American documentation. The switching diode (tunnel) used is an...
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This circuit was found in a 1975 documentation. Operational amplifiers must have a symmetrical source and...
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