DIY Samsung LM561C build

V

VegasWinner

Well-Known Member
nogod_ said:
No, the flexible strips are constant voltage and include resistors which makes your efficiency take a hit. By how much I dont know.

Edit: do the flexible strips come in CC? I thought they were all CV
Click to expand...
they come in both. i also ordered 10m of cc in 5000k and 3500k
namaste
 
Randomblame

Randomblame

Well-Known Member
Baudelaire said:
I need some advice from fellow stripheads here. Putting together a strip assembly that I would like to control with a switch the turns half the strips on, or all of the strips on. I believe the electrical nomenclature for the functionality I'm looking for is Off/A/A+B. I can find lots of Off/A/B switches, but nothing that's A+B (except a bunch off audio switches). Can anybody point me in the right direction, or help me better define what I need so I can refine my search?

-b420
Click to expand...
You need either 2 separate drivers or you need a dimmable driver to set the 2 stages via resistors in the dimmer circuit.
With a rotary switch like this one below and a few resistors, you could also set more than 2 levels, eg. 4 positions, 25k, 50k, 75k, 100k for 25%, 50%, .... (up to 11 levels with the one below)
But if you take the dimmable version you can also be dimmed steplessly over a 100k potentiometer.
Or you use an arduino with 0-10v extension card and control everything via pwm.
In any case, you need a dimmable driver.
With separate drivers, it's very easy to design, you just need a simple I-O-II switch for that.
 

Attachments

Baudelaire

Baudelaire

Well-Known Member
Randomblame said:
You need either 2 separate drivers or you need a dimmable driver to set the 2 stages via resistors in the dimmer circuit....
With separate drivers, it's very easy to design, you just need a simple I-O-II switch for that.
Click to expand...
Thanks @Randomblame. So I realize I should have mentioned my setup has individual drivers for each strip. 3 strips each with their own driver (Estonia strips). So this would be an AC power switch that controlled power to 0: no strips, 1: strips A+C, 2: strips A+B+C. Strips A and C would be wired together in parallel. Strip B would be on its own circuit, until switch position 2 was selected. Is this where a "double pole, double throw" switch comes in? I currently have it wired with a I-0-II switch, but that only fires A+C or B alone.

-b420
 
Baudelaire

Baudelaire

Well-Known Member
Baudelaire said:
Thanks @Randomblame. Is this where a "double pole, double throw" switch comes in?
Click to expand...
I realize now I answered myself. Carry on...

@StonerCol: Ebay. http://ebay.to/2tqfFMP

Nice strips, good guys to work with. Wish they came with more documentation, but the strips are well made by TCI in Italy, and diodes very efficient, close to Samsung's top line and similar to the Bridgelux EB strips. They are discontinued by the manufacturer, so who knows how long they will have them in stock.

-b420
 
You must log in or register to reply here.
Top