This powerful transmitter for the 27 MHz band was found in a Japanese publication from 1961. The circuit is powered by battery and has the details of the coils given next to the diagram.
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...