 |
| |
I have 900 of LED christmas lights on my tree and they are quite bright!
Is it possible to dim them? |
| |
 |
| |
-If a transformer is used, then you could use an adjustable transformer (Variac) to reduce the voltage to the transformer. If a transformer is not used, you could use a standard light dimmer -
check the combined wattage of your lights to get the proper capacity
dimmer. -I know they are 4V per bulb. If I take out one bulb, then all of them
go out so I assume they are in series and not in parallel. I can't see
any transformer. -LED's are binary devices - either ON or OFF. They cannot be dimmed in
the usual sense. Their average output can be changed by the duty cycle.
If they are switched on & off fast enough, the eye will not see them
flickering, but will see a lower average output. I.e., dimmer. A 60 Hz cycle would be flicker-free and there is a convenient 60 Hz
signal source 8-). There may or may not be a commercially available
black box to do this. It would be trivial for an electronics hobbiest,
but my guess is that you are not one. - I bought some LED Christmas lights (they certainly
don't get warm) two years ago, and there's no transformer. I assume
they use some sort of series and parallel combination. Though I've
not wanted to sacrifice the string to figure out what's going on. I suspect it's not a single string of 900 lights, but a number of separate
strings, coupled from one to the other in the same way that traditional
incandescent Christmas tree lights went, a plug at one end and an outlet
at the other to plug in the next string. That way you don't have to
bring each string down to the outlet, but each individual string is
seeing 120VAC. |
| |
 |
|
| |
| |
