Why can leds not be dimmed?
Your original lighting lamp should be a silicon controlled phase dimmer. Leds can only be used for digital signal dimming or pulse modulation.
The incandescent lamp is tuned by adjusting the current size of the current. The lighting principle of an LED LED by a ballast changing the frequency of the ballast and changing the voltage to change the voltage will presumably be known. Dc current can only make it bright and not bright. There are two ways to adjust the light, one of which is to be destroyed by the control points of each other, so that the overall brightness can be adjusted. But they are not evenly distributed, and the dimmers are expensive. Japan recently a lot of lighting companies successfully developed a mature dimmers, can move light on multiple element child at the same time, the brightness from 100% to 50% (Toshiba said they can be 0-100%, I take a dim view). With these two methods, you can make the leds 15-100% dimming. But special lighting fixtures and corresponding dimmers must be chosen. Because your desk lamp is not equipped with dimmer, and the lamps and lanterns are just general lamps and lanterns rather than applicable LED light lamps and lanterns, cannot be adjusted to light.
Leds have separate rectifying circuits that can't be switched from the power source. Are you familiar with electrical wiring? If you will, make a adjustable current source. There's nothing else to do.
