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.
Found in a 1990 PE Hobbyst, this 4-digit circuit has a high response speed. The circuit is based...
The circuit shown bellow is na áudio amplifier using Darlington transistor in a complementary...
It can be obtained from Mouser Electronics new evaluation module for 1A stepper motors control...