TRIAC Dimming help, please.

Airwalker16

Airwalker16

Well-Known Member
So I'm going to add some VERO10s into the bottom side of some shelves in a glass faced cabinet that houses my dads old rock collection we've moved to another location. I'm going to drill a small hole a few cm wider than the Vero and just deep enough to hide it. It's hard to find a driver that dims when I only need like 15w of power for all 5. 3w each. The PCD-16-350 from meanwell says it can be dimmed via triac. So does this mean I just get a leviton brand sliding dimmer and wire the purple and grey wires inline, positive closer to driver, negative after?, on the positive side of the driver's DC side before the LEDs strings? Itd be in parallel obviously so I'm not sure if it has to be series for it to work or what. Anyone have the answer for me or another option for a 20w dimmable driver? Preferably that can use a Pot or a Slider. They'd look best on the side of the cabinet.
Thanks all.
 
Last edited:
nachooo

nachooo

Well-Known Member
Airwalker16 said:
So I'm going to add some VERO10s into the bottom side of some shelves in a glass faced cabinet that houses my dads old rock collection we've moved to another location. I'm going to drill a small hole a few cm wider than the Vero and just deep enough to hide it. It's hard to find a driver that dims when I only need like 15w of power for all 5. 3w each. The PCD-16-350 from meanwell says it can be dimmed via triac. So does this mean I just get a leviton brand sliding dimmer and wire the purple and grey wires inline, positive closer to driver, negative after?, on the positive side of the driver's DC side before the LEDs strings? Itd be in parallel obviously so I'm not sure if it has to be series for it to work or what. Anyone have the answer for me or another option for a 20w dimmable driver? Preferably that can use a Pot or a Slider. They'd look best on the side of the cabinet.
Thanks all.
Click to expand...
You can use a triac dimmer to dim your lights but most triac dimmers have a minimum load of 20 watts
You need to buy a specific led triac dimmer that has a minimum load of 5 watts.
They are available in most countries now
 
Airwalker16

Airwalker16

Well-Known Member
nachooo said:
You can use a triac dimmer to dim your lights but most triac dimmers have a minimum load of 20 watts
You need to buy a specific led triac dimmer that has a minimum load of 5 watts.
They are available in most countries now
Click to expand...
Oh ok. Wiring? I can use the pcd-25-700 instead and have 140ma each. Parallel works?
 
nachooo

nachooo

Well-Known Member
Regarding triac dimming...
The only thing you needs to check is the minimum load on your triac dimmer. The drivers do not matter its about load.
Old dimmers needed between 20-40 watts
Some of the new dimmers can go down to 3-5 watts
 
Airwalker16

Airwalker16

Well-Known Member
Orb said:

XLG-25-AB MEAN WELL USA Inc. | Power Supplies - External/Internal (Off-Board) | DigiKey

Order today, ships today. XLG-25-AB – 700mA 22 ~ 54V Constant Current LED Driver AC DC Converter Topology 1 Output from MEAN WELL USA Inc.. Pricing and Availability on millions of electronic components from Digi-Key Electronics.
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Maybe the XLG-25-AB would work for you?
Click to expand...
Oh wow. Very nice. I forgot all about those. I'm going to be mounting to wood shelves about 3/4" thick and 10"x10" wide so I dont know if I should use the lpf-40d-24 for 40watta or this 25watt xlg. I just dont wanna be pissed it's not bright enough when I'm done only using 5watts a piece but I'm sure itd be plenty. Maybe this XLG is a better option hm.......
 
Airwalker16

Airwalker16

Well-Known Member
I've always just used Poyentiometers to dim the B version meanwells. Is it the same to use a slider dimmer for home lighting? I think itd be a better look on the side of the cabinet over a pot dangling off the driver. Anyone know all the options that will work with B Version Meanwell drivers for dimming? Cause they're certainly 0-10V dimmers. So would you just hook the purple and grey to the white and blue?
 
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