Electric lamp and discharge devices: systems – With radiant energy sensitive control means – Radiant energy controlled regulation of the current supply...
Patent
1989-12-11
1991-08-06
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
With radiant energy sensitive control means
Radiant energy controlled regulation of the current supply...
315156, 315307, 315DIG7, 250214AL, H05B 3702
Patent
active
050380796
ABSTRACT:
A method of controlling fluorescent lamps in accordance with any selected one of a family of curves plotting sensed natural and artificial light against lamp output, each curve having a steep portion and a more moderate portion and a circuit for providing such control.
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patent: 4464606 (1984-08-01), Kane
patent: 4514727 (1985-04-01), Van Antwerp
patent: 4585339 (1986-04-01), Senoo
patent: 4658129 (1987-04-01), Fan
patent: 4874989 (1989-10-01), Nilssen
patent: 4894527 (1990-01-01), Smith
Dinh Son
LaRoche Eugene R.
North American Philips Corporation
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