This circuit with unijunction transistors was found in a documentation from the 80's. The trigger times of the SCRs depend on the capacitors and are adjusted in the 5M (4M7) potentiometers.
This circuit was found in an American 1980s documentation. The components are current but most...
This circuit was found in an old GE SCR manual. The SCR must be in accordance with the relay and...
This circuit measures millivolt voltages. The corresponding current range of the multimeter can be...