This circuit is an alternative version of the previous one also found in the July 1995 Electronics Now magazine. The triac must be equipped with a heat sink.
This circuit was found in 1980s American documentation. The transducer is a piezoelectric capsule and the...
This circuit from the 80s uses an integrated circuit from the time. The CI is difficult to find...
This receiver, which, depending on the coil, can receive medium or short waves, was found in a...