This circuit was found in a 1980s documentation for amateur radio. The circuit makes use of components of the era, but modern equivalents can be used.
This circuit split the voltage of a Power supply allowing it to be used as dual supply. The limit...
In the figure we have a simple timer with two voltage comparators of the four of an LM339. The...
This circuit allows coupling optical signals to a TTL input with excellent performance. Among the...