Asked by: Martin Tones
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Q:
Do these 3W White Power LED Star require a resistor if so what size.
A:
Hi Martin,
Thank you for your question, you would likely need a resistor with 2.2 Ohms. If you look on the link below we have a few more details.
how-to-use-3w-star-led
Thank you for your question, you would likely need a resistor with 2.2 Ohms. If you look on the link below we have a few more details.
how-to-use-3w-star-led
Answered by: Cullen Lewis
06-Dec-19
Q:
Hi there, I want to try and make a light to use on my mountain bike....I want to make it as bright as possible....would it be possible for you to put together a list of products from your site and I will buy.... I am looking to make a light at least 2000 lumens....
Dave
Dave
Asked by: David
A:
Hi David, I believe I spoke to you on the phone earlier today, unfortunately none of our items would be suitable for this as although you could create a circuit it wouldn't be practical.
Answered by: Michael Lockhart
29-Jan-18
Q:
would theses unit be suitable for use as a flash with the raspberry pi camera I do know how to wire them to be switched via gpio
Asked by: Terry
A:
Hi Terry, The LED may be suitable to use as a flash, it has a Luminous Intensity of 67000mCd and has a viewing angle of 110 degrees so a fairly large viewing angle. However you would need to ensure the LED is connected up correct and follows something similar to the datasheet in terms of power supply and also a power resistor, Using_a_Kitronik_3W_star_LED.pdf
Answered by: Michael Lockhart
26-Oct-17
Q:
I am looking to connect six of these into a ring format. Should I connect them in parallel and use a PSU? Thanks
Asked by: Lizzie
A:
Hi Lizzie, You would need to connect them in parallel, and you would need to defiantly use a power supply. One that is rated 5V 5A.
Answered by: Michael Lockhart
07-Feb-17
Q:
Can you suggest suitable batteries to power these LED's? I'll probably have about 6 of them in a scale model to light it from the inside.
Thanks in advance.
Thanks in advance.
Asked by: Phill
A:
Hi Phill, Unfortunately due to the current drain of the LED star batteries are not recommended as shown in this datasheet in the section ‘using the LED’, Using_a_Kitronik_3W_star_LED.pdf and on the second page it shows what power supply should be used.
Answered by: Michael Lockhart
11-Jul-16
Q:
Is this LED able to be dimmed?
Asked by: Joshua Budgen
A:
You might be able to use a potentiometer, however you would need to ensure this is rated to at least 3W. You might find though that as you turn the potentiometer there is little difference in the brightness and then suddenly the Led will turn off. The best way to do this is to use a micro-controller to quickly turn the LED on and off.
Answered by: Michael Lockhart
04-Feb-16
Q:
Does this LED require a heat sink?
Asked by: Keith
A:
No you don’t require a heat sink, the power LED comes mounted on to special PCB star that acts to draw heat away from the LED, therefore extending its operational life. However please note during use the star LED and resistor will become hot and as such shouldn’t be touched.
Answered by: Michael Lockhart
23-Jul-15
Q:
Would a 5v 1amp USB charger be suitable to power this LED using the curcuit https://www.kitronik.co.uk/blog/how-to-use-3w-star-led, if not would a 5v 2amp charger be sufficient?
Asked by: Keith
A:
The 3W LED star draws around 300mA, so a 5V 1A power supply would be suitable.
Answered by: Michael Lockhart
20-Jul-15
Q:
Do you sell a kit to run this LED. What power supply would be required. If no kit is available could you provide the parts requied to produce a simple lamp.
THANKS,
Howard Bevan
Afon Taf High School.
THANKS,
Howard Bevan
Afon Taf High School.
Asked by: howard bevan
A:
There isn’t a kit for this one but if you use this tutorial on how to use a 3W LED star that shows the components required for the circuit how-to-use-3w-star-led
Answered by: Michael Lockhart
11-Feb-15
Q:
If used with the USB power lead what size resistor will I need? Can USB produce enough current safely?
Asked by: stuart
A:
You cannot use this LED from a USB power lead. It requires too much current. You can use the 1W version through as detailed here: how-to-use-3w-star-led
Answered by: Aaron Sturman
20-Apr-14
Q:
what sizes do these come in????
Asked by: zach lees
A:
The star is 20mm across. If you click on the images just under the main product image there are some mechanical drawings.
Answered by: Geoff Hampson
26-Oct-12
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