Does this use PWM Dimming or Voltage Dimming?
1837092
It does NOT dim the LED's using Pulse Width Modulation or voltage dimming. There are four rocker switches on the back that selectively turn on/off sections of the lights.
692776
It depends upon how the car's circuitry dims the lights. Most use a variable-pot to lower the voltage. This will give a non-linear effect with LEDs. They will dim somewhat to 90-80%, then go out completely. To get linear dimming, you want to use a PWM circuit that maintains constant voltage, but varies duty-cycle 1-100%. This way, you can get the LEDs to be as dim or as bright as you want. Google for "motor speed control PWM 12v".
1265792
This light even advertises that it uses PWM, that's Pulse Width Modulation, which means FLICKERING. That's how it dims. This is incredibly stupid for a camera light. I'm sure that if you're using long shutter times you'll be fine, but for anything high-frame-rate or with high gate speed it's very likely that you'll get unacceptable flicker.
1120004
I'm not sure. I have it operating from a wall switch with a dimmer. Maybe this helps.
609933
Its a slide switch dimmer. No it will not remember its last setting. You just slide it to your preferred setting. Simple
692777
I haven't had occasion to manually dim them, but when I overload the accessory ports on my car, they do dim slightly until the alternator kicks back on. So I would ASSUME they are dimmable within certain voltage/amperage parameters.
635934
I'm using the switch to control two sets of florescent lights with no trouble. It simply switches them on and off, there is no dimming function with the switch.
999044
I used an electronic dimmer switch and it works like a charm I got mine at Ace Hardware for less than $20. Remember you are controlling the power to the Ballast not the Lamp
743547
No. I will basically give you an on/off for a light. Look for a light dimmer which regulates voltage.
2132413
From 100%to 19% the dimming appears to be DC. Below 19% very high freq pwm. Uses GB led. IPS panel. See this site for a good explanation of all specifications. http://www.tftcentral.co.uk/reviews/dell_u2413.htm
1372933
The only way to dim would be to use a low voltage inline dimmer, you can try a lutron dimmer switch but I don't believe it work because it is not a damnable driver
479406
There is a switch available via Home Depot (and similar stores, I'm sure) that will control fan speed and light dimmer via a wall switch. It is about $50. I'm using it and it works fine.
1411248
I know that Marco has already answered the question so you are good to go. The issue with LED dimming is the power module that steps down the AC 120 AC voltage, not typically the LED. PWM stands for pulse with modulation which dims the LED by lighting the LED at various duty cycle percentages instead of changing the voltage comming out of the dimmer like incandescent dimmers. Know that you can call LEDwholesalers directly and they are very helpful. I have gone to their location in Hayward, CA and they powered up several items so that I could compare the quality of the different LED strips. They are actually excited about what they sell! - Brad
1470866
The Twelve dollar price is for 1 puck light with no AC adapter. I used a 30 watt power adpter that cost about $14. to run my 6 upper lights and another one to run my 6 lower cabinet lights. This unit (I don't think) is capable of dimming (not sure but don't think so) but you can look it up under " Ledwholesalers 30 Watt LED Power Suppply Driver Transformer 120 to 12 Volt DC Output, 3207 "
274695
No, it never dims on my unit. Sounds like a failing alternator. Alternators fail over time in a lot of cases, not suddenly.
1169950
Actually, they can be dimmed. In the positive line, use a 10 watt power resistor of about 12 to 15 ohms with a toggle switch bypassing the resistor for high power. This is the arrangement that I use.
567594
It depends on the type of bulb you put in it.If you put an LED or incandescent bulb in it, it is dimmable.