I'm from Ukraine, so normal power is a rare thing. Most of us forced to experiment with DIY crazy shit in the scale of our budgets. So I have a 12V battery with a charger and I have found a DC 12V lamp to save some power on AC-DC 12V-220V converting. Sitting with a light is better than sitting in the dark.
But I start noticing that lamp is emitting light much more dimly than before. It happened gradually through 1.5-2 years, so the first idea was to blame the lamp itself. Shitty lamp working almost constantly for 2 years might started dying. I checked voltage. 13V from the PSU with battery. Ok. Replaced the lamp (luckily I had an unused one from the same set as the dim lamp) and... the same shitty dim light. But I wasn't completely sure that it was brighter 2 years ago. I could easily imagining things. Returned the previous 2 years old lamp. The light became much brighter. Almost as I remembered it.
Cleaned the contacts. All is nice now.
It looks like DC low voltage/amperage doesn't work fine with E27. Oxidizing is more significant in comparison to AC 220V.
I hope my story is dull enough for this community :)
6 Comments
itsathursday@lemmy.world · 11 pts · 198d
Dull but illuminating at the same time
Aussiemandeus@aussie.zone · 6 pts · 198d
Yeah low voltage allows build of of current affectors.
That's why outside powerlines don't really corrode.
25000volts is a decent cleaner haha
seathru@quokk.au · 4 pts · 198d
Also galvanic corrosion is much more pronounced with DC vs AC.
yaroto98@lemmy.world · 5 pts · 197d
Also happens if your contacts aren't solid, or if you're going copper->aluminum
KickMeElmo@sopuli.xyz · 4 pts · 198d
Dull like your light, but you cleaned it properly.
RobotFK@lemmy.blahaj.zone · 3 pts · 197d
Just as info: The E27 just means that the mount type is Eddison with a 27mm base