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Search: Posts Made By: u3b3rg33k
Forum: Lighting 04-26-18, 11:08 AM
Replies: 23
Views: 27,687
Posted By u3b3rg33k
From what I was reading in that article, in small...

From what I was reading in that article, in small power supplies, active PFC circuitry is both fragile and expensive.
From a facilities standpoint, it's probably cheaper (and more reliable) to...
Forum: Lighting 04-25-18, 05:03 PM
Replies: 23
Views: 27,687
Posted By u3b3rg33k
I'd also like to go off grid (not a likelyhood...

I'd also like to go off grid (not a likelyhood for a while here) - but an inverter shouldn't draw more real power in DC than the real power output + 10% (or whatever efficiency the inverter is rated...
Forum: Lighting 04-25-18, 09:21 AM
Replies: 23
Views: 27,687
Posted By u3b3rg33k
Yes, they can measure power factor, but my poco...

Yes, they can measure power factor, but my poco doesn't bill residential customers for having a low power factor. it's been a long time since I've seen a mechanical meter around these parts.
for...
Forum: Lighting 04-24-18, 03:38 PM
Replies: 23
Views: 27,687
Posted By u3b3rg33k
I don't get billed on apparent power though, I...

I don't get billed on apparent power though, I get billed on kWh. maybe if they took power factor into account it would matter?
Forum: Lighting 04-23-18, 09:20 AM
Replies: 23
Views: 27,687
Posted By u3b3rg33k
I'm not quite sure how you come to that...

I'm not quite sure how you come to that conclusion. real power isn't at 20W. The surface temp of the housing is lower with the electronic ballasts vs the magnetic ballasts with the same room temp,...
Forum: Lighting 04-22-18, 03:30 PM
Replies: 23
Views: 27,687
Posted By u3b3rg33k
mine run at a power factor of .62, and pull 20VA....

mine run at a power factor of .62, and pull 20VA. for a 15W bulb I'll happily take a watt or two penalty (it can't be in the ballast because it's plastic and not hot like the magnetic one was) to...
Forum: Lighting 04-20-18, 10:30 PM
Replies: 23
Views: 27,687
Posted By u3b3rg33k
I picked up some electronic ballasts for my...

I picked up some electronic ballasts for my aquarium - got tired of listening to the magnetic ones buzz. they were $7ea, instant on (like a good CFL), and no buzzing!
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