DIMMER AND LED DRIVER WITH DIMMING MODES

摘要

Drivers (2) comprise converters (21) for converting input signals from dimmers (1) into output signals destined for light emitting diode circuits (3) and controllers (22) for detecting dimming levels of the input signals and for bringing the drivers (2) from first, normal dimming modes into second, eco dimming modes in response to detection results defining the dimming levels being equal to/smaller than threshold levels. In the first/second dimming modes, the first input signals are converted into first/second output signals according to first/second curves (I, II). The second curves (II) define higher light outputs than the first curves (I) for most of the dimming levels. Dimmers (1) comprise indicators (11, 2, 13) for indicating to users the dimming levels of the input signals being equal to/smaller than the threshold levels. The indicators (11, 12, 13) may comprise light emitting diode 10 apparatuses (11), mechanical clicks when turning knobs (12) and markers or markings (13) on the dimmer.

主权项

1. A driver comprising
a converter for converting an input signal from a dimmer into an output signal destined for a light emitting diode circuit, and a controller for detecting a dimming level of the input signal and for, in response to a detection result defining the dimming level being equal to or smaller than a threshold level, bringing the driver from a first dimming mode into a second dimming mode, the converter being configured to, in the first dimming mode, convert first input signals into first output signals according to a first curve (I), and to, in the second dimming mode, convert the first input signals into second output signals according to a second curve (II), the first and second curves (I, II) each defining a light output per dimming level, and the second curve (II) defining a higher light output than the first curve (I) for most of the dimming levels.