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一般而言,调光器是通过控制传输给灯具的功率来改变照明水平(强度),调光可以手动控制也可以自动控制。调光方法可分为两种:降低灯具电压(即电压调制),如图1所示;减少为灯具传送满电压的时间(即相位控制)。所使用的调光方法必须与灯具的类型相匹配。本文主要对相位控制方法进行描述。图1使用自耦变压器减小电压正弦波的幅度,而不改变正弦波的波形对白炽灯进行调光时,几乎可以使用所有的
In general, dimmers change the level of illumination (intensity) by controlling the power delivered to the luminaire. Dimming can be done either manually or automatically. Dimming methods can be divided into two types: reduce the lamp voltage (ie voltage modulation), as shown in Figure 1; reduce the time for the lamp to deliver full voltage (ie, phase control). The dimming method used must match the type of luminaire. This article describes the phase control method. Figure 1 Using an autotransformer to reduce the magnitude of a voltage sine wave without changing the waveform of the sine wave When dimming an incandescent lamp, it is possible to use almost all