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- #Electronic dimmer for led lights drivers
- #Electronic dimmer for led lights portable
- #Electronic dimmer for led lights free
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#Electronic dimmer for led lights drivers
Off-line LED drivers are comprised of constant-current regulating switching power supplies generally equipped with dc outputs. This constitutes a stable load that can be driven by a constant dc current source. LEDs consist of a solid state p-n junction with a fairly constant forward voltage drop. In contrast, it is much more straightforward to dim LEDs because of their makeup. This forces dimming circuitry to include a closed-loop current regulating system able to respond rapidly to such changes. In addition, there are operating points at which lamp impedance changes rapidly in response to small changes in arc current. One reason they are so hard to dim is that the impedance of plasma arcs is non linear and varies considerably depending on current and temperature. Instead, they use specialized dimming controllers, often demanding additional analog or digital dimming control cables.įluorescent and HID lamps are both types of arc discharge lamp. To further complicate matters, most dimmable fluorescent and all HID systems are incompatible with standard triac-based phase dimmers. Dropping past that point risks experiencing noticeable color change and instability in their plasma arc.
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But even with electronic ballasts, HID (high-intensity discharge) lamps cannot be dimmed to much more than half of their maximum light output. With relatively expensive dimmable electronic ballasts, fluorescent lamps can be dimmed to below 5% of maximum light output. Consider, for example, fluorescent lamps.
#Electronic dimmer for led lights free
#Electronic dimmer for led lights portable
7C degree Colortemperture light portable led desk light.