Dimming Led Lights With Resistors

Typical dimmers reduce the rms voltage heading to a light to dim it.

Dimming led lights with resistors.

In recent years advancement in led technology has made dimming possible and even easy but it will still require a little planning. In many states there are regulations to the brightness and colors of leds on cars which is why this is important to take note of. Dimming an led light is as easy as adding resistors to the connection or even several resistors to ensure you get the right brightness this is called analog dimming. You might not have as much control over the brightness as you would using pulse width modulation pwm.

Mean well has developed a wide line of led drivers with advanced dimming features for led lighting. Deal with a wide range of source voltage including part formed sine waves which is not easy for the control logic. Passive resistance 1 10vdc 0 10v and pulse width modulation pwm. This 3 in 1 dimming allows for the user to dim leds with three different forms of signal.

Early led fixtures were not receptive to dimming. This can be done by simple resistors or by chopping the top part of the waveform. There are two solutions to consider. With a pot we also want a 150 ohm fixed resistor in series.

The amperage could be high say 5 10 amps maybe higher. Dimming 110vac led fixtures. Hi i am trying to rig up a single led for an aircraft 24 volt system breakout box. Many led fixtures are available in low voltage 12vdc or 24vdc input or standard 110vac input.

Many models like the hlg npf and lpf are built with mean well s 3 in 1 dimming feature. Long term solutions for dimming leds with no flickering. And it needs to stay small like for on top of a mini banana plug grounding plug. I need to have a led light that will withstand higher current applications.

So by putting the 150 ohm resistor in there there will be a maximum current of 20 ma through the led. It will be tested between 2 banana plug sockets. Let s also say that we want the led current to go down to 1 ma.