focus mechanism that allows the beam angle to be adjusted from the lamp head, ballast, or from a remote location when using the optional remote control system. Power control switches located on the rear of the lamp head allow the lamp to be ignited and extinguished at the lamp head as well as the ballast and in remote control locations.

The lamp head cooling system utilizes a high-volume, low-velocity blower, extensive sound absorbing, vibration dampening, and baffling to attain the lowest sound of any comparable system. The new Xenotech high-current globe interface allows the globe to be serviced or replaced from the front of the lamp head with just the removal of the front lens holder. The lamp head yoke terminates in a standard 1-1/8" pin, allowing the use of all stands, hanging, and mounting devices configured for this size pin. The Britelight 4000 lamp head is safety listed as "suitable of wet locations" by ETL.

The Britelight 4000 electronic ballast was introduced in early 1990. It was the first single phase 4000 watt xenon ballast designed specifically for portable use in the conditions found in motion picture production and equipment rental applications. In these few short years it has become one the most popular and sought after items in our product line and a standard in the entertainment industry.

Always seeking to improve the performance and reliability of our products, we redesigned the Britelight 4000 electronic ballast. In addition to the superior performance and outstanding features you have come to expect, the new redesigned electronic ballast incorporates the latest power factor corrected switching power supply technology and has been designed with an additional 50% over nominal power capacity for maximum reliability. The ballast's thermal management system has been improved to provide extended operation in hot environments. As always, the ballast power input is configured for single phase operation for use anywhere in the world.

The ballast output supplies DC current with no AC line ripple. This pure DC output produces an unvarying light from the lamp allowing use of any shutter speed without concerns of synchronizing the camera with the line frequency. The stability of the ballast output also makes unnecessary the use of a crystal synchronized generator. Overall, this is an ideal light source for high speed and special effects photography applications.