This commercial transistor tester circuit (EICO 666) is from a Japanese publication from the 1960s. The switch selects the types of test with the switching of the terminals and the gain ranges.
Found in an American publication in 1967, this circuit generates pulses for the triggering of a LASER of...
The maximum current of this circuit is 1.5 A. The circuit has the formulas next to the diagram to...
This biestable vox circuit was found in an old documentation. The circuit makes use of components of...