Circuit improvements for solar lamps
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United States of America Patent
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Issued Date -
Sep 21, 2006
app pub date -
Mar 8, 2004
filing date -
Mar 7, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A solar powered lamp arrangement where there is a solar photo-voltaic panel array controllably connected to a battery storage providing with such control a supply of direct current to at least one light emitting diode, and a switching arrangement with means to detect, by reference to the output of the array, the level of ambient light, and an electrical connection between at least one said light emitting diode and the battery storage so that the light emitting diode or diodes will, when the ambient light is below a selected threshold, be connected to effect a light output the arrangement being further characterised in that, in a supply connection from the solar panel array to the light emitting diode or diodes there is a further unidirectional current conducting unit which is not a Schottky diode.
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