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Posted to uk.d-i-y
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Auto dimmer for LEDs
On 24/11/16 13:01, wrote:
On Wednesday, 23 November 2016 13:42:32 UTC, wrote:
Trailing Edge, AKA Reverse Phase Control, RFC is a technical backwater , a patch for retro fit to cover early driver limitations.
cheaper rather than early
LEDs are best dimmed and driven at the driver.
Usually they're best dimmed wherever it's cheapest
From article quoted "...adjustable minimum brightness..." isn`t something that`s needed when LEDs can be dimmed to near zero directly at driver.
Dimming the power, whatever way, to the driver will always have aminimum setting below which cannae go.
There are a few ways you can dim RC ballasted LEDs all the way to zero.
Conceptually its simple: the current is the intensity of the light.
Its the non linear relationship between current and voltage that makes
dimmers that expect a resistive load, not perform linearly, if indeed
they perform at all.
--
"I guess a rattlesnake ain't risponsible fer bein' a rattlesnake, but ah
puts mah heel on um jess the same if'n I catches him around mah chillun".
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