Resistive evaporation offers a simple and economical alternative to vacuum coating. Thermionics RES-200-2 high current feedthroughs are designed to hold both filament- and boat-type elements. A wide range of filaments and boats are available allowing most materials to be evaporated by this process.

Thermionics REPS Series power supplies come standard with multiple output taps for 5, 10, 20 and 40 volts to make full use of the various resistive elements available. The power supply can be operated in a manual or remote mode. The manual mode allows regulated control of current to the evaporation source by the control's hand-held potentiometer. In the remote mode an external signal can be provided to the power suppply through its rear panel BNC-style connector to control current output.