McPherson Inc. (Chelmsford, MA) has introduced the highly regulated, universal light source power supply Model 718. Supporting scientific and industrial applications, it powers tungsten-halogen, ceramic and glow-bar infrared light sources. Output power is rated at 250 Watts maximum. Its exceptional performance of <0.05% ripple to the source in use is based on high stability transistor series pass regulators with additional control circuitry. The power supply can be operated from the front panel controls, or remotely, via 0-6V analog input. A front panel Local/Remote switch allows users to select the mode of operation. Separate connectors on rear of unit are for lamp housing Fan, Light Source connection (plus Interlock,) and analog Remote input.