HDS U60 Buzz

ibcj · Aug 15, 2005

I just received a HDS EDC U60 GT and when it is on, there is a slight buzzing sound that is emitted. It is faint, but can be easily heard when held near the ear. Just wondering if this is "normal" ?

MoonRise · Aug 15, 2005

Most likely it's Normal. Usual cause is inductor buzz/sing from the driver board electronics.

turbodog · Aug 15, 2005

mine does that also

several other regulated led lights do this as well

TorchMan · Aug 15, 2005

I just turned mine on (U60) to primary setting. No sound. When I cranked it up to full power, I could hear a buzzing when held at the ear.

270winchester · Aug 15, 2005

It's a miniture cooling fan and the fusion motor that drives it... /ubbthreads/images/graemlins/crackup.gif

Luxman · Aug 15, 2005

I thought it might be the coolant pump. /ubbthreads/images/graemlins/grin.gif...but I don't hear any noise from mine at any light level.

Cmoore · Aug 15, 2005

I don't really know if mine makes any noise or not -- too many muzzle blasts and time in helicopters during 20 plus years in the Army for me to tell.

I did try mine next to a AM/FM radio though and did not detect any interference.

segan · Aug 15, 2005

yeah my U60 buzzes occasionally when set to one of the lower levels. I think there was discussion in the HDS thread a while back on this issue, can't remember what was the outcome though

Grox · Aug 16, 2005

Yeah mine does it too; my a2 does it as well. Its got something to do with regulation - its normal.

CroMAGnet · Aug 16, 2005

I thought there was a buzz going 'round about this light!

Connor · Aug 16, 2005

Henry once posted a comment on this somewhere. The buzzing sound is called "inductor sing" and is perfectly normal.

-Connor

ZeissOEM2 · Aug 16, 2005

My son do also hear this sound from my SF U2,but I can`t hear it.

ibcj · Aug 16, 2005

FYI - I emailed Henry and he said that it is the inductor and it is completely NORMAL. It will vary from setting to setting.

nemul · Aug 16, 2005

Hey, what's all this buzz about?

NikolaTesla · Aug 16, 2005

de Choke in de lite like to zing to u. it be true. not broke.

HDS U60 Buzz

ibcj

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MoonRise

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turbodog

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TorchMan

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270winchester

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Luxman

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Cmoore

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segan

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Grox

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CroMAGnet

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Connor

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