This circuit is from a Fairchild digital clock module shown in the March 1977 issue of Radio Electronics magazine. The circuit required a few external elements, including a common transformer.
This circuit was obtained from a Philips documentation from 1968. The transistors can be replaced...
This circuit was found in a Radio Electronics magazine from July 1964. The circuit uses 4...
This simple PWM circuit was found in the March 1991 issue of Radio Electronics magazine. The...