Starlac Industries offers Power Supply E.H.T., EE - 646. Starlac Industries is an ISO 9001: 2000 certified manufacturer and exporter of scientific instruments. The Power Supply E.H.T. Offers a continuously variable E.H.T. Output from 0 to 5KV D.C. With a low voltage output of 6.3volt D.C. It is suitable for vacuum tubes. It works with an E.H.T. Transformer and a low voltage transistor inverter circuit. This also has a meter calibrated 0 to 5KV to control the output voltage.