发明名称 |
Lighting control device for controlling dimming, lighting device including a control device, and method of controlling lighting |
摘要 |
A lighting control circuit comprises a dimming level detection circuit, a waveform generator and a comparator circuit. The dimming level detection circuit is configurable to generate a first voltage level signal corresponding to a selected one of at least two different types of dimming signals selected from among an AC phase cut dimming signal, a DC voltage level dimming signal or a PWM dimming signal. The waveform generator is configured to output a periodic waveform. The comparator circuit is configured to compare the periodic waveform with the first voltage level signal to generate an output waveform having a duty cycle corresponding to a dimming level of the one of the at least two different input dimming signals and a frequency corresponding to the frequency of the periodic waveform. Also, methods of controlling lighting. |
申请公布号 |
US8115419(B2) |
申请公布日期 |
2012.02.14 |
申请号 |
US20080328115 |
申请日期 |
2008.12.04 |
申请人 |
GIVEN TERRY;HARRIS MICHAEL;MYERS PETER JAY;CREE, INC. |
发明人 |
GIVEN TERRY;HARRIS MICHAEL;MYERS PETER JAY |
分类号 |
H05B37/02 |
主分类号 |
H05B37/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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