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Archive for October 20th, 2010

LED Flashlight Disassembly

Of late I’ve been toting an LED flashlight / laser pointer around in my pocket for peering into dark corners and highlighting interesting objects. It started flickering and I discovered the joint just aft of the switch had become slightly loose.

Disassembled LED Flashlight

Disassembled LED Flashlight

Well, I always wondered how the thing came apart and now I know!

The threadlocking compound seems to have turned into dusty white powder, although my pocket doesn’t seem all that hostile an environment.

Flashlight innards

Flashlight innards

The switch assembly pulls out, revealing the LED circuit board with the laser module in the middle. The two wires correspond to the two ON states: flashlight and laser.

For what it’s worth, the 8 LEDs draw 130 mA (16 mA each), far more than the 3 mA each in that pathetic work light.

The laser draws 20 mA.

Screwed everything back together and it works fine again…

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