Electric lamp and discharge devices: systems – With load device temperature modifier – Automatic control of the temperature modifier
Patent
1983-03-25
1985-08-06
Chatmon, Saxfield
Electric lamp and discharge devices: systems
With load device temperature modifier
Automatic control of the temperature modifier
315115, 315116, 315151, 250205, H01J 724, H01J 1332, H01J 1974, H01J 6152
Patent
active
045338531
ABSTRACT:
The light output of a fluorescent lamp is controlled and optimized. Both the light output and the lamp voltage peak at nearly the same value of mercury cold spot temperature. Controlling the lamp voltage therefore controls the light output. Thus, when the lamp voltage is continually monitored, any decline from the peak voltage is detected and a signal is generated which reverses the instant mode of operation of a cooling device placed in proximity to the lamp cold spot. With the cooling mode reversed, the lamp voltage will rise towards the peak. The cooling mode remains unaltered until the lamp voltage falls again.
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Corona Stephen C.
Hammond Thomas J.
Lama William L.
Northrup Karl A.
Chatmon Saxfield
Xerox Corporation
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