Cree humming/buzzing ?????

BlackAngel-SCUBA

Newly Enlightened
Joined
Oct 19, 2012
Messages
23
Location
Lebanon, Pa
im making a dive light and just finished wiring up my cree xml u2. the problem is when it is on high it has a humming/buzzing sound. is there a problem or is this normal?
 

Toaster79

Enlightened
Joined
Mar 16, 2011
Messages
206
Location
Slovenia
Probably the driver is making that noise. Everything that runs on PWM is making noise but not always can you hear it.
 

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