Sequential without integrated (CB6768E)

This circuit is from a 1967 publication and applies to incandescent lamps up to 600 W. Triacs must be fitted with heat sinks.

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Burglar alarm (CB7428E)
This circuit was found in a Popular Electronics from the 90s. The components used are all common...
Overload Alarm (CB6082E)
This circuit is from a 60's documentation. The circuit uses components from the era and serves to...
Divide-by-5 Using the 4018 (NI005E)
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