This circuit was found in a 90s Radio Electronics. It produces an ultrasonic signal in a special transducer at the frequency of 2.25 MHz. No information was given about the transformers.
This circuit was found in an old American publication from the 70s. It flashes a warning lamp,...
September 2015 - Mouser Electronics already has in stock the new CCG15S converters 15W from...
This article is from a publication by A. Fanzeres from the 70s. We kept the original text. This...