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Last night I test the SMPS of Farnell, I can adjust the voltage +/- 25%.
I adjust it to 24.6v over the led and without resistor it gives a very stable output current of 2.07 mA and that's exacly what I need.
The heatsink I use from an old computer proc. with little fan, size 50x50x25mm but it's...
Here you find a simple design of a led driver for input 85 - 265 vac and output 12vdc 350mA 4.2 Watt
size is very small 23x43mm pcb.
http://www.powerint.com/sites/default/files/PDFFiles/der186.pdf
SMPS is a switching power supply without big transformer and therefore small in size, a regulate power supply is with a big transformer and they are bigger in size.
Thanks erik,
I just order 24V 60W 2.5A by Farnell for €36,10 see TRACOPOWER|TXL 060-24S|PSU, ENCLOSED, 60W, 24V | Farnell Nederland
This is just good for the C4500 LED, it seems that 24V for this led is perfect because it has a forward voltage range between 23.4 and 27.4V.
Thanks KJ6EAD for the links, very useful.
I buy the leds by Farnell but could not find the driver, although this driver is very expensive it gives me some hope.
Rutronic I still have to check.
Thanks again.
For the smaller power leds I use now just a mains plug 12v power unit of an old switch - hub, that just works fine.
But for the Bridgelux BXRA-C4500 I need more heavy, in your link I see they have and its a good idea but on an earlier
link of KJ6EAD pointing to pdf of Bridgelux with a list of...
Re: Power driver for Ultra Power LED from Bridgelux BXRA-C4500
Thanks.
1. What I mean with Next step will be to fool the beamer so it not switch off if I disconnect the original lamp.
First of all, of course first I switch off the power before disconnect the original beamer lamp.
But after...
Re: max. light power from an E27 LED lamp
Thanks again erikl,
Yes I know for the Bridgelux BXRA-C4500 its impossible to use a E27 fitting, just only because of the heatsink with fan. I fit it on a Pc proc. Heatsink with little fan, this works good.
But because I want to build this in a...
Thank erikl, its an interesting power unit for low price.
But I wonder how they made a drive for super led lightbulb of 220vac in a E27 fitting, for normal bright leds will be easy but how about the super leds who need more power like 10 - 20 up to 60 watt ?
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