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Anyone know much about LED drivers?
I've got 6 of [url= http://gb.auroralighting.com/Lighting-Products/Discontinued-Products/350mA-IP65-Fixed-8-5W-Dimmable-LED-Downlight.aspx ]these things[/url] to drive off the mains. I don't need to dim them as they'll be switched by a PIR. It seems that chosing an appropriate driver might take three or four times as long as actually choosing the lights themselves. What kind of driver (or drivers) do I need?
You need a 350ma constant current driver. Pretty readily available. Just need to match it the power, 8.5 x 6 so 51 watts(or more) if you want to wire them to one driver but that would be a particularly big one or 6 10 watt drivers then wire the inputs in parallel. 50 watts of leds is quite a lot.
Thanks.
Hmm. Can't get them to spin up. Do these need a 24v driver? 8.5w / 0.350ma ~= 24v?
It's a constant current driver so the voltage will be dependent on the load. Basically the voltage will be variable and will be what ever it needs to be to supply the current.