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 LED battern light surprise
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 Return to top of page · Post #: 1 · Written at 8:24:29 PM on 20 December 2023.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 2405

I'm currently building a proper workbench area, in a location where I've always wanted it but SWMBO decreed it wasn't to be.

Now that SWMBO has moved on (and stolen my dog, but that's another story) I can finally have a permanent work area in a habitable part of my house!

Anyway, the workbench and shelving are finished, I just need to wire up the power outlets and the lighting.

I wanted plenty of light close up to mount under the shelf above the workbench so I chose a 4400 lumen LED batten fitting, about the same size as a twin 40 fluro but much slimmer.

It still wasn't slim enough for my liking so I separated the metal box from the back of it and extended the wires from the LEDs to the driver. That got it down to 20mm projection from under the shelf.

"That connector is overkill for 40.8 volts" I thought.

So I measured the LED supply voltage. No, there wasn't a decimal point there, this thing runs on 408 volts DC! At 112mA. Non isolated.

I wouldn't have expected that. I used some 380V silicone wire with thick heatshrink for the joins, just as well!

I'm pleased with the result, the bench lighting is very satisfactory. It lights the work and doesn't shine in your eyes.

Now if the power supply that came with it turns out to be too cackly, I'll make a current limited voltage doubler straight off the mains - it'll probably waste about 10 or so watts in heat but at least it won't interfere with my scope readings!


 
 Return to top of page · Post #: 2 · Written at 9:20:40 PM on 20 December 2023.
DangerousDave's Gravatar
 Location: Toongabbie, VIC
 Member since 1 September 2020
 Member #: 2438
 Postcount: 131

I’m sorry to hear about the pooch , Ian.


 
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