Lamp-lighting device
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United States of America Patent
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-
Aug 7, 1990
Grant Date -
N/A
app pub date -
Apr 12, 1988
filing date -
Apr 18, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a novel lamp-lighting device, comprising a full-wave rectifier composed partially or entirely of thyristor(s), said full-wave rectifier having both an input terminal connected with an ac source and an output terminal connected with a lamp; a smoothing means connected in parallel with the lamp; means to detect a voltage across the lamp that exceeds a prescribed level; and means to control the conduction angle of the thyristor(s) dependently on the magnitude of the voltage, said controlling means being operable in association with said detecting means.
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