Suggested by a 90s Radio Elecrtronics, this circuit is intended to supply mobile equipment of the time. The transformer data is given next to the diagram.
This oscillator for the practice of telegraphy provides a good sound in a loudspeaker, with only...
This ultrasonic insect repellent was found in American documentation from the 1980s. The...
The short-wired circuit is suggested by National Semiconductor in documentation on the LM3909. The power...