This 1967 commercial radio covers 6 wave bands selected by appropriate coils. The circuit currently uses critical components, such as coils and transformers.
This TTL circuit found in the September 1996 issue of Electronics Now magazine doubles the...
This key is turned off by a touch sensor. The time it remains active depends on capacitor Cx. The...
This circuit is from a 1967 publication and applies to incandescent lamps up to 600 W. Triacs must be...