MR16 Led Bulbs » bulb

MR16 MALIBU LIGHT BULB

admin — Wed, 15 Feb 2012 00:28:20 +0000

SALE Price: $ 0.89

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LITTLE GIANT 566224 11 WAY MULTI COLORED LED REPLACEMENT BULB, 3 WATTS

admin — Sun, 12 Feb 2012 22:42:38 +0000

SALE Price: $ 69.39

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AG-ECO LED MR16 LIGHT BULB, GU5.3, 1.5 WATT, 12V, REPLACES 20 WATT INCANDESCENT BULB

admin — Tue, 24 Jan 2012 03:43:54 +0000

SALE Price: $ 7.90

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3.6 WATT 12 VOLT LED BRIGHT WHITE MR16 REPLACEMENT BULB

admin — Thu, 19 Jan 2012 23:44:25 +0000

SALE Price: $ 28.39

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WHY AM I HEARING A HIGH-PITCHED WHINE WITH 12V BATTERY AND HALOGEN BULB?

admin — Mon, 16 Jan 2012 12:59:32 +0000

Question by msoexpert:
Why am I hearing a high-pitched whine with 12V battery and halogen bulb?
I have a 12V, 8A LED dimmer that I have been using with flexible LED strip lights. And it’s worked just great!

The other day, I was at Home Depot and they had 12V, 50W halogen floodlights (MR16) on sale for just $ 0.67. So I purchased 2 to use with my dimmer. And the dimmer works great with it. The bulb dims and brightens. I hear a high-pitched whine as I adjust the dimmer from dim to very bright.

At first, I thought it was coming from the bulb. But it’s really coming from the dimmer. The battery powering the bulb is a 12V, 1.3AH battery pack (Ten 1.2V, 1300ma Nimh batteries). And if I bypass the dimmer and just hook up the battery to the bulb, it’s super bright and no whinning sound.

The dimmer doesn’t make a sound with anything else it’s connected to. So if I hook the battery and dimmer to a 21 LED MR16 bulb, no whinning or problem. Same with connecting LED strip lights. It’s just that 50W halogen that is causing the dimmer to whine.

Because the halogen is the most powerful light I am using, the only thing I can think of that is causing the whinning is the dimmer switch is not able to handle the roughly 4A current the bulb is drawing. But that would be 1/2 the 8A rating of the dimmer and I doubt it’s that bad.

Any help you can offer me would be appreciated!
FYI, it’s the halogen bulb that is making the whinning, not the dimmer!

I’ve heard that AC dimmers can have trouble with clean waveforms, causing whinning. Is it possible the same thing is happening here with DC?

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Answer by Tim C
Because the halogen is the most powerful light I am using, the only thing I can think of that is causing the whining is the dimmer switch is not able to handle the roughly 4A current the bulb is drawing.
That is correct.

But that would be 1/2 the 8A rating of the dimmer and I doubt it’s that bad.
Whining does not mean it is bad. It whines because it dims by very swiftly turning the power on and off.

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GRAYBEAN LED BULB MR16, 6W, 12V–WARM WHITE

admin — Sat, 14 Jan 2012 18:30:54 +0000

SALE Price: $ 11.99

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MOONRAYS 95553 LANDSCAPE LIGHTING REPLACEMENT BULB, MR-16 LED REVIEWS

admin — Fri, 13 Jan 2012 17:28:22 +0000

SALE Price: $ 17.99

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WHY AM I HEARING A HIGH-PITCHED WHINE WITH 12V BATTERY AND HALOGEN BULB?

admin — Mon, 10 Oct 2011 14:50:41 +0000

Any help you can offer me would be appreciated!
FYI, it’s the halogen bulb that is making the whinning, not the dimmer!

I’ve heard that AC dimmers can have trouble with clean waveforms, causing whinning. Is it possible the same thing is happening here with DC?

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But that would be 1/2 the 8A rating of the dimmer and I doubt it’s that bad.
Whining does not mean it is bad. It whines because it dims by very swiftly turning the power on and off.

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WHY AM I HEARING A HIGH-PITCHED WHINE WITH 12V BATTERY AND HALOGEN BULB?

admin — Fri, 19 Nov 2010 14:56:30 +0000

Any help you can offer me would be appreciated!
FYI, it’s the halogen bulb that is making the whinning, not the dimmer!

I’ve heard that AC dimmers can have trouble with clean waveforms, causing whinning. Is it possible the same thing is happening here with DC?

——————————————

But that would be 1/2 the 8A rating of the dimmer and I doubt it’s that bad.
Whining does not mean it is bad. It whines because it dims by very swiftly turning the power on and off.

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Add your own answer in the comments!

Q&A: SHOULD YOU OVER VOLT A LED MR16 BULB LIKE A HALOGEN BULB…?

admin — Wed, 17 Nov 2010 12:44:33 +0000

Question by Mountain bike:
Should you over volt a LED mr16 bulb like a halogen bulb…?
I know a lot of people over volt 12v mr16 halogen bulbs to 14.4 to give them more white light rather than yellow, but what about a 12v mr16 LED bulb would you want to run that at 14.4 volts or could you get a clear bright white light out of it by running it at 12volts. Also same question about the Cree XLamp XR-E LED Bulb – 12V AC/DC, MR16 Base.

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Answer by Matt W
Absolutely not! LED’s literally use a fraction of the energy used to emit the same candle power… The LED MR-16 might be rated at 12 volt but the amps it actually uses is far less! So beware, over volting the lamp might cause it to burn out the LED’s nearly instantly if not much sooner than the big life span they should achieve. I hope that helps. I use all CFL and LED bulbs in my home so I have a quite a bit of knowledge on this particular subject…

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