Domestic LED lamps
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Jeff J
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Domestic LED lamps
I've just bought some R63 (240v spotlight) LED lamps for home use. I can't find any info. on how they drop the volts. Is it simple rectification then resistance to drop volts or some more complicated electronics.There is a 15 led array inside but I can't get to any other of the components. I am puzzled because I thought if it was the former method then there would be a lot of heat generated, but they seem to run at room temp. Thanks
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ghost123uk
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Re: Domestic LED lamps
In those type of bulbs, It's all done electronically. Chips to do accurate voltage regulation cost pennies when mass produced on the scale that they are.
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Re: Domestic LED lamps
Domestic LED lamps typically use a series capacitor to drop the mains supply voltage to a suitable level. Sometimes known as a wattless dropper. If the current and voltage are 90 degrees out of phase then no heat is produced.
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CovKid
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Re: Domestic LED lamps
Warm white in the house, bright for workshops.
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Re: Domestic LED lamps
LeeCarey wrote:Domestic LED lamps typically use a series capacitor to drop the mains supply voltage to a suitable level. Sometimes known as a wattless dropper. If the current and voltage are 90 degrees out of phase then no heat is produced.
I know that in planning factories with machines you can improve the power factor by use of fluorescent lighting to offset the inductive load of the electric motors but I think the use of capacitors in the way suggested is a tad more complicated than the above infers.
From a quick internet search:
If he uses an LED, he'll need another diode in parallel, backwards, and probably need a Zener (Diode) in parallel to prevent over voltage. The incandescent doesn't care about this, so it may be a better choice
That is somewhat along my line of thinking. Any more specific knowledge anyone?
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Jeff J
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Re: Domestic LED lamps
You don't appear to have that choice with R63's.CovKid wrote:Warm white in the house, bright for workshops.
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CovKid
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Re: Domestic LED lamps
There are so many fitting converters now, its possible to fit a range of bulbs in just about any light fitting. Some I found locally, some online.
Well worth watching BigClive on youtube as he takes apart numerous LED bulbs.
Well worth watching BigClive on youtube as he takes apart numerous LED bulbs.
Roller paint your camper at home: http://roller.epizy.com/55554/" onclick="window.open(this.href);return false; for MP4 download.