Drive circuit, illumination source, and lighting device
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United States of America Patent
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Apr 11, 2017
Grant Date -
Sep 29, 2016
app pub date -
Nov 13, 2013
filing date -
Dec 7, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A drive circuit (1) according to the present invention is a drive circuit which causes an LED module (4) to emit light, using a dimming signal which is an alternating current signal which has been phase-controlled in response to a dimming level, the drive circuit (1) including a control signal generating unit (8) which integrates a voltage of a rectified dimming signal to generate a control signal for controlling the luminance of the LED module (4), the voltage being greater than or equal to a first voltage and less than or equal to a second voltage less than a maximum voltage of the dimming signal.
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