All Questions
7
questions
1
vote
1
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551
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Efficient and cost-effective way to limit current across an LED strip
I am currently attempting to build a DIY driver board to power the backlight of an LM270WQ1 panel.
Per the datasheet, there are six LED strips, each of which take 36V @ 350mA.
The adapter board that ...
0
votes
1
answer
337
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Limiting the Current of a Constant Current LED Driver which is Driving a Halogen Bulb
I am powering a 12V, 35W halogen bulb with a MeanWell HLG-100H-20B constant current power supply. The "B" version of this power supply has a really neat dimming control system which lets one control ...
1
vote
2
answers
257
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High power LED array
I’m designing SLA 3D printer and I need to design UV LED array for LCD screen backlight. Preliminary design is 5x3 (5 parallel lines with three LEDs in each). All LEDs will be soldered on PCB.
The ...
- 53
0
votes
2
answers
193
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Effects of current/voltage limiting of LEDs
First of all, I have read many articles about the non-linear effects of voltage vs current of LEDs. I also know that current will rise as temperature rises, batteries have resistance, LEDs brightness ...
- 43
0
votes
1
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121
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Why is the current wrong after resistors in series with simple LED?
Setup
source --- 1.5V batteries x2 = 3V
LED --- 2V 35mA http://www.futurlec.com/LED/LED5R.shtml
Resistors --- CR1W 1W 10ohm +-5% x 4 = 40ohm
Description
I have your average "Light up a LED" ...
- 3
4
votes
5
answers
10k
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How to limit current to LEDs
I have understood that this is a bad way to do it:
Since some LED can draw more current than others.
So lets say I would power some high powered LEDs, like say 10 x 3W LED with a DC forward voltage ...
- 697
0
votes
1
answer
453
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Cascading WS2803 LED drivers, each with different output current
I've decided on using WS2803 PWM constant current LED drivers. I'd like to cascade two of them and use the first one for 15mA output and the second one for 20mA output (each chip for driving different ...
