Illuminator for photodynamic therapy and diagnosis which produces substantially ...
The light sources may comprise generally U-shaped fluorescent tubes that are driven by electronic ballasts. Adjustment of the ballast voltage controls the output power of the tubes. The tubes are ...
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Apparatus for controlling illumination of a fluorescent lamp
Also included are two ballasts for ballasting the fluorescent lamp having an input adapted to receive a source of A-C power and an output coupled to the fluorescent lamp. The ballasts provide power to ...
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Multiple-input electronic ballast with processor
The ballast can also receive commands from other ballasts or a master control on the serial digital communication link, such as a DALI protocol link. The fourth input is an analog signal, which is ...
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Fluorescent lighting power controller for optimum energy savings
An electrical circuit used in conjunction with high power factor ballasts and quality fluorescent lamps to reduce the power consumption of a fluorescent fixture by an average of 40% with a lesser ...
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Variable frequency electronic ballast for gas discharge lamp
An electronic ballasts for a gas discharge lamp. The ballast includes a variable frequency power generator, a tuned driver network, and a valley correction modulation system. The driver network has a ...
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HIGH INTENSITY DISCHARGE LAMP BALLAST CIRCUIT
The integrated circuit simplifies the design of power converters and electronic ballasts in particular, while contributing to reducing part count, complexity and cost in conjunction with the single ...
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VERTICALLY ADJUSTABLE OVERHEAD LIGHTING SYSTEM
... 12). When florescent growth lights are used, bulk and heat produced by their ballasts (35) are eliminated by locating all ballasts (35) remotely from the apparatus (10). Patent information provided by ...
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AUTOMATIC LIGHT DIMMER FOR GAS DISCHARGE LAMPS
When the power is applied to the apparatus (60), either at initial turn on or after a momentary interruption, the apparatus applies full power to the lamp ballasts by causing a switch (SCR 4 and SCR 3 ...
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Luminescent fixture providing directed lighting for television, video, and film ...
A plurality of separate electronic ballasts located at the base of the extending reflector panels provide a plurality of unsynchronized electrical current pulse trains each for exciting pulsed ...
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Magnetically shielded flourescent lamp ballast case
The magnetically shielded fluorescent lamp ballast case for a fluorescent lamp ballast can be employed for core coil fluorescent lamp ballasts or for electronic solid state fluorescent lamp ballasts. ...
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