Electric lamp and discharge devices: systems – Regulation of the control current and/or potential applied...
Patent
1995-06-07
1997-09-30
Pascal, Robert
Electric lamp and discharge devices: systems
Regulation of the control current and/or potential applied...
315199, 315291, 315317, 323235, 323242, G05F 100
Patent
active
056729413
ABSTRACT:
Lamp dimmers are disclosed in which, in the course of varying average power supplied to the lamp load, the semiconductor power control devices transition between one and the other of substantially conductive and non-conductive power conditions, the duration of the transition by the power control devices themselves is increased beyond the minimum possible duration to reduce generated EMI. The dimmers disclosed provide for varying the direction, duration, shape, and phase angle of transitions.
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Callahan Michael
Chester John K.
Goddard Robert M.
Pascal Robert
Philogene Haissa
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