Electric lamp and discharge devices: systems – With radiant energy sensitive control means – Electric switch controlled by the radiant energy responsive...
Patent
1991-07-17
1993-04-20
Pascal, Robert J.
Electric lamp and discharge devices: systems
With radiant energy sensitive control means
Electric switch controlled by the radiant energy responsive...
315157, 315158, 250214AL, H05B 3700
Patent
active
052045862
ABSTRACT:
A solar powered lamp having a circuit for providing positive turn-on at low light levels causes a light source thereof to undergo a discrete transition to an "on" condition and prevents unnecessary drain on a battery thereof. The circuit comprises a positive feedback loop which amplifies current flow rapidly to a predetermined level at which the light source is illuminated. In doing so, it causes a plurality of solar powered lamps to illuminate at substantially the same time.
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Pascal Robert J.
Siemens Solar Industries L.P.
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