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Results tagged with led-strip
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user 124009
LED Strips come in two designs, both on Flex Printed Circuits (FPC). 1. Simple LED + Resistor versions, typically with multiple parallel segments of three LEDs with matching resistors. 2. Digitally controllable with embedded controllers. Data is wired in series while power is paralleled by segments or pixels. Both have different and similar application challenges.
0
votes
HLG-40H-20B class 2 power supply to a 24 LED 's (stage) light and regular power extension
The type B, on one end you have one cable with three conductors, Brown Blue and Green, The Blue (Neutral) and Brown (Live) is your AC power input, and the Green is the ground.
The Red(+) and Black( …
- 7,517
4
votes
How efficient are RGB LED strips?
I assumed its sri to be 180 degrees which would make it ~2000lm total
for 45W.
Given your assumptions ≈2,000 lm would be correct. What you do not have is the efficacy (lm/w) and you did not in …
- 7,517
2
votes
Accepted
LED strip without controller
Your strip only needs a 3.6V DC power supply.
It appears you have one 20Ω resistor for each LED.
This would power each LED with 30 mA or 90 mW per LED (3Vf x 0.03 A).
If this is true there would be ab …
- 7,517
1
vote
specs for LED driver to power 18 x XML T6
I assume the LEDs are wired in series. This means you will need a boost driver with an output of about 70V.
It depends on how much current. The max current will be determined by the thermal manage …
- 7,517
0
votes
High power LED strip power distribution
As I interpret your question, you want eighty 700 mA LEDs each with their own dimmer.
This is likely the most challenging LED project I have seen.
What is the target size for the PCB?
What is the …
- 7,517
1
vote
Will this schematic work - basic LEDs + strips
My recommendation would be to power each LED individually. I'd use an LDO adjustable voltage regulator at around 2.7 V then try powering the LED directly without a resistor and adjust (likely lower) …
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0
votes
multiplex numerous strips of WS2812
PWM has nothing to do with this. Just set it aside for now. How the LEDs get dimmed does not matter. The brightness of each LED is programed 30 times a second where the method of dimming the LED is …
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1
vote
Using 1 IR receiver for 4 LED controllers
They are "cheap", why do you expect them to work?
I think my problem is that there is no common ground for the IR
receiver. This maybe damaged all LED controllers
Not likely. You just need a …
- 7,517
1
vote
High Current DC LEDS Strips with Aluminium Plate... is grounding advisable?
UPDATE
No, you do not need to ground the aluminum plate.
The Mean Well is supplying filtered DC power. There is nothing to radiate.
Basically the only possible source of ESD would be the Mean Well …
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0
votes
Powering an LED matrix
I am building an led matrix having 75 SMD 2835 60mA leds
I am going to assume you mean you want to light up approximately 75 white LEDs with a test current of about 60 mA.
To get the resistanc …
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1
vote
Laser Diodes to work it in high temperature
Practically the operating temperature is limited at 250°C, because
the electrical contacts, made by soldering with a high lead solder
(300°C melting temperature).
Not true, wires are bonded, …
- 7,517
10
votes
Accepted
What is the RGB value of Edison Light Bulbs?
I used Firefox Web Developer Eyedropper to grab the RGB from a photo of an Edison Light Bulb.
#FACA08
(250,202,8)
A lighter pixel
This is very close to the color when a 2700K 97 CRI LED was …
- 7,517
0
votes
Accepted
LED's or OLED for creating specfic colors
I design LED grow lights for Horticulture Research at the University of Florida. I have analyzed every top end color LED out there. Not just studied, analyzed.
It is important to understand Radian …
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0
votes
LED Power vs current and voltage
The problem is the LED driver supply's voltage is too low. With insufficient voltage you will not get enough current flowing.
You can try parallel strings of 3 LEDs but without the resistors. (IF A …
- 7,517
1
vote
Accepted
Current limiting for constant current source
The best solution would have been to add 6 Mean Well LDD-1000 ($3.50 ea) to drive each string and they all can be powered by the HLG-320-36.
Another solution is to use TI's LM3466 Multi-String LED Cu …
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