Found in American documentation this circuit uses transistors of the time. The circuit can be made with current components. It works as a trigger working with 600 ohm signals.
This multiple switching power supply was found in the April 1991 issue of Radio Electronics...
This circuit makes the simple test of SCRs that have a low maintenance current, with those of the...
Some old multimeters have a high resistance scale that has an internal circuit powered by a 22.5 V...