Found in an American documentation from the 90s, this circuit has a configuration that has been extensively explored in other articles on this site. The FET can be the MPF102 or equivalent.
This circuit was found in a General Electric documentation from 1965. The circuit is full wave for...
This is another quick adder that we found in an Electronic Design from the 80s. It also applies to...
This circuit uses two sensors that are placed at the intersection of a miniature railroad, causing the LED...