Discuss LED Driver alternative in the Lighting Forum area at ElectriciansForums.net
Resistor value 16k to gnd. in photo? Is that a blue band?And what is the resistor value - we can probably decode that to a current setting.
Thats useful. So the lamp needs 605mA and will have about 115V across it.Here we go, had on my old phone.
These are coming up in the £50.00 range, is this cheap, and why the 500ma over 700ma?
The 500mA version of this range is the nearest i can see for a fixed output, assuming they dont want dimming.
They are cheap enough to give it a try
Yes I think it would. Also it's likely that the programming resistor from the old one could be transferred to this. But I don't know if any of the other control terminals, Dali etc. need to be left disconnected (or not) once the o/p current is set.
500mA is less than 600mA so not going to stress the LEDS,Thank you all again for your time on this matter.
These are coming up in the £50.00 range, is this cheap, and why the 500ma over 700ma?
what do you recon on the following;
Looks good to me. Gives 550mA with current selecting resistor of 0 ohms, ie a link, so you don't need to buy a programming resistor! Seems good to go.Tridonic Linear LED Driver LC 75W 250â550mA flexC lp EXC Tridonic 28001808
Shop the Tridonic Linear LED Driver LC 75W 250âÂÂ550mA flexC lp EXC, model number 28001808. Enjoy reliable and efficient performance for your lighting needs.www.bltdirect.com
Any thoughts on above
I see that band as a blueish green or a greenish blue. Could be either TBH, but 15k is the standard value, although 16k is in the E24 series, of course.The band that Brian sees as green, I see as blue, which would make it 16kΩ leading to a lamp current of 310mA,
Thank you Lucien for the cautionary words.I am not convinced that the LED is presently running at 605mA. The Osram LEDset guide gives the resistor value as:
Rset [Ω] = (5 V/Iout [A]) x 1000
For 605mA that would be 8.3kΩ and although I can't see the colours on that resistor clearly enough to say what the value is, it doesn't look like 8.2 kΩ. The band that Brian sees as green, I see as blue, which would make it 16kΩ leading to a lamp current of 310mA, i.e. it might be significanly underrun (which could be a factor in the LEDs all outlasting the drivers.) I would want to double-check that before choosing an alternative driver.
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