100W and 300W honeycomb "mine" lights
Added 2022-07-11 08:49:48 +0000 UTCDarn! I made quite a few goofs while making this video, because I was trying to record it quickly before travelling with work.
https://www.youtube.com/watch?v=Z7E_GDQI6M0
Interesting lights, but using the common and very flickery unsmoothed linear regulator approach. The heat radiated by these lights is surprising for LED.
They do have good customisation and hackability though.
Comments
I run mine using a crude capacitative dropper and bridge rectifier at about 30 Watts, and it runs cool and bright. I've been toying with the idea of changing the resistors on the linear regulator, but at 27 individual regulators, that's a lot of resistors to decouple.
Tim Pearson
2022-07-13 06:36:27 +0000 UTCTechnically speaking you could increase the value of all the current sense resistors around the edge or remove one of the current regulator chips from each section. Both tricky due to being on a heatsink. One other option that might work could be to snap off one resistor per regulator to halve the power. Not sure if they like being open circuit though.
Big Clive
2022-07-12 18:38:09 +0000 UTCI kind of like the form factor of these lamps. Is there a reasonable way to modify the power side so that it doesn't grill the LEDs and heat the room?
Peter Laws
2022-07-12 12:32:12 +0000 UTChttps://www.instructables.com/Propane-Pop-Gun/
Big Clive
2022-07-12 02:37:43 +0000 UTCI think that project originated on instructables before being featured by Nighthawkinlight and Backyard Scientist. It's very visual.
Big Clive
2022-07-12 02:37:34 +0000 UTC
