发明名称 |
CURRENT OFFSET CIRCUITS FOR PHASE-CUT POWER CONTROL |
摘要 |
Apparatus for maintaining at least a holding current in a leading-edge phase-cut dimmer during a period of transient voltage variations, the apparatus connectable to the dimmer and connectable to a load connected to draw current from the dimmer. The apparatus may comprise an edge detector connected to receive a voltage from the dimmer and generate a leading-edge signal in response to a leading-edge of a phase-cut waveform, and a current offset circuit connected to receive the leading-edge signal and draw a supplementary offset current in response to the leading-edge signal, wherein the supplementary offset current is sufficient to maintain at least a holding current in the dimmer during the period of transient voltage variations. The current offset circuit may comprise a holding current circuit which also draws supplementary current in response to an instantaneous value of load current.
|
申请公布号 |
US2012098454(A1) |
申请公布日期 |
2012.04.26 |
申请号 |
US201113093700 |
申请日期 |
2011.04.25 |
申请人 |
GROTKOWSKI MIROSLAW MAREK;MOUSSAKOV MILEN;SHEEHAN GREGORY BERNARD;THORNTON TOM WILLIAM;FOXALL THOMAS GEORGE;LIGHT-BASED TECHNOLOGIES INCORPORATED |
发明人 |
GROTKOWSKI MIROSLAW MAREK;MOUSSAKOV MILEN;SHEEHAN GREGORY BERNARD;THORNTON TOM WILLIAM;FOXALL THOMAS GEORGE |
分类号 |
H05B37/02 |
主分类号 |
H05B37/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|