I haven't used Led strips yet, so didn't check their datasheets, but since they are a consumer product destined to used by the masses, I guess they are not that critical about the power supply.
I see them sold paired with "12V DC supplies" , in fact sometimes they are called "12V DC transformers"
, maybe they don't exactly need to be regulated.
Anybody got a datasheet?
I see them sold paired with "12V DC supplies" , in fact sometimes they are called "12V DC transformers"
, maybe they don't exactly need to be regulated.Anybody got a datasheet?
Usually, as I know, led strips are sold with transformer less power supplies. I do not really know which ones are more reliable - with a transformer or transformer less, and what are advantages and disadvantages. For some reasons I like more with a transformer. You make it yourself and you know how to fix it. It may cost few $$ more, but it's fun
Just checked.
http://optekinc.com/datasheets/ovq12s30b7.pdf
I had imagined some FET constant current circuit or equivalent, but I'm quite disappointed, they're just strings of 3 Leds in series with a plain resistor, as low tech as can be.
So you don't need a regulated supply at all, even less a very inefficient and expensive linear one.
I'll start using Led strips to add personalized light to my machines work area (PCB drill, punchers, transformer winding, etc.) and I'll just use a 12V AC transformer, bridge and 4700x16 filter cap to get raw 15/16V and add the proper resistor so the strip gets 12V , not because it's *that* critical but to avoid unnecessary overheating if too high, weak light if too low.
But I guess that staying within +/- 0.5V around 12V will be fine.
Much easier than a 30A regulated supply.
Of course, a standard or modded PC SMPS will work fine within its rating.
http://optekinc.com/datasheets/ovq12s30b7.pdf
I had imagined some FET constant current circuit or equivalent, but I'm quite disappointed, they're just strings of 3 Leds in series with a plain resistor, as low tech as can be.
So you don't need a regulated supply at all, even less a very inefficient and expensive linear one.
I'll start using Led strips to add personalized light to my machines work area (PCB drill, punchers, transformer winding, etc.) and I'll just use a 12V AC transformer, bridge and 4700x16 filter cap to get raw 15/16V and add the proper resistor so the strip gets 12V , not because it's *that* critical but to avoid unnecessary overheating if too high, weak light if too low.
But I guess that staying within +/- 0.5V around 12V will be fine.
Much easier than a 30A regulated supply.
Of course, a standard or modded PC SMPS will work fine within its rating.
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