thats true some drivers of maenwell have already pot but i can't see any pot in my model but it sais "built in dimming function"i cant uderstand if is talking about an internal dimable pot or the curciut of diimming fuction.
thanks for your reply
what drivers i need for 2 vero 29
- Thread starter akaki
- Start date
thanks for your reply
http://www.meanwell.com/search/LPF-90D/LPF-90D-spec.pdf&cd=1&ved=0CCgQFjAA&usg=AFQjCNGqzGMdyuBWR4RXPbGfBD2SDVIxVQ
The spec sheet tells you that you actually have 3 options for dimming. You can give it a 1-10v power source, you can use a PWM device or you can use a 100KOhm pot. There is a wiring diagram on the last page, that shows you the 2 wires that you will need to use to control the dimming. If this is too complicated for you, then I would advise you to go with the $40 option you listed above because you don't want to damage any of your components by making a mistake in the wiring.
I did do some googleing for you to try and find a guide with pics, but all I found were disussions on reef forums that make a few suggestions. I did not spend too long on this, but if you dig deep I am sure you will find something.
Good luck
The spec sheet tells you that you actually have 3 options for dimming. You can give it a 1-10v power source, you can use a PWM device or you can use a 100KOhm pot. There is a wiring diagram on the last page, that shows you the 2 wires that you will need to use to control the dimming. If this is too complicated for you, then I would advise you to go with the $40 option you listed above because you don't want to damage any of your components by making a mistake in the wiring.
I did do some googleing for you to try and find a guide with pics, but all I found were disussions on reef forums that make a few suggestions. I did not spend too long on this, but if you dig deep I am sure you will find something.
Good luck
intetational shipments from jameco is bit slow . 5000k or 4000k?
zangtumtum
Well-Known Member
in my experience, I use in a lamp 2 x LPF-60D-54 with a 100KOhm pot only without resistence with 20 luxeon rebel ES for each :
one go to 0 = total dark, the other near 0 = you can see a little brighter on the fosfor, but the killamp sign 0watt!
Other lamp have 2 x LPF-40D-42 with 2 pot 100KOhm without resistence,both go to real 0 =total dark.
I don't know why,could be a wiring problem...or run without resistence,what else could it be?
A don't know with Vero but I think they can run perfect,I have test many other different PS, but for me this LFP are realy good,
in my configuration,all LFP, at max power 24/24 run realy cold.
one go to 0 = total dark, the other near 0 = you can see a little brighter on the fosfor, but the killamp sign 0watt!
Other lamp have 2 x LPF-40D-42 with 2 pot 100KOhm without resistence,both go to real 0 =total dark.
I don't know why,could be a wiring problem...or run without resistence,what else could it be?
A don't know with Vero but I think they can run perfect,I have test many other different PS, but for me this LFP are realy good,
in my configuration,all LFP, at max power 24/24 run realy cold.
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very usefull information about lpf because i was wondering if it's better to get the psu's out of the tend or not..i'm waiting for them they will ship them 3 of June dam it!!!!+at least five days for international shipment.....IMO maybe, the killamp cannot mesure so small amounds of wattage
a question with the circuit that you gave me please!!!!
after i connect the 10k resistor with the dim- i have to bridge the middle pin of the pot with 1 one of the side?
guod
Well-Known Member
^^^^^^
YES
with the 10K your lowest setting is about 10%.
you should not dim to zero... the driver dont like that. (see spezification)
use PWM instead for dim to zero.
basic schematic for Pots....
from... http://sound.westhost.com/pots.htm
variable resistor with two pins connected...
from... http://www.st-andrews.ac.uk/~www_pa/Scots_Guide/first11/part2/Page2.html
http://fddrsn.net/pcomp/examples/potentiometers.html
YES
with the 10K your lowest setting is about 10%.
you should not dim to zero... the driver dont like that. (see spezification)
use PWM instead for dim to zero.
basic schematic for Pots....
from... http://sound.westhost.com/pots.htm
variable resistor with two pins connected...
from... http://www.st-andrews.ac.uk/~www_pa/Scots_Guide/first11/part2/Page2.html
http://fddrsn.net/pcomp/examples/potentiometers.html
Guod!!!please a small help...
i went to a electronic shop to buy the 100k pot and a 10k resistor. but he ask me how many watts i would like my resistor to be.i didn't know so i told him for what reason i need them and he gave me a 5W10KJM resistor is it ok ?
guod
Well-Known Member
wattage is no problem here, yours will work.
standart is 1/4 W, and it is enough in this case...
http://upload.wikimedia.org/wikipedia/commons/e/e3/3_Resistors.jpg
standart is 1/4 W, and it is enough in this case...
http://upload.wikimedia.org/wikipedia/commons/e/e3/3_Resistors.jpg