Club 80-90 Forums

I need to put a resistor in line as its a bit bright!
Which one should I use?
Again please help me
Kris
ps one krisis to another seems to be the way at the moment



http://s243.photobucket.com/albums/ff17 ... CF0512.jpg

oh and I cant remember how to put pics up

Try a 1000 ohm resistor to run a normal led from a 12 volt supply. If its still too bright then try a 2000 ohm resistor, should bring it down ok but get a 1 amp resistor as you are running a few LED's there!

Thank you
On MNaplins site looking now
Cheers Kris

HOW MANY PAGES!?!?!?!
and a search engine jobby thats
I will try again tonight when I have a wee dram to focus the mind
Kris

VWCamperfan wrote: get a 1 amp resistor as you are running a few LED's there!

Resistors dont have current ratings, they have wattage
a 1000 ohm resistor with 1A running through it will dissapate 1000W, ie a small electric fire.
Mind you, it would need to be connected to 1000V to do so.

Does the tacho have a separate wire that lights it up?
Idealy stick a current meter in this and find out how much current the leds are taking?

Otherwise start with a 100 ohm 1Watt resistor and add another 100 ohms ( in series if it is still too bright) (in parallell if it is too dim)

T

I came across this guy who has tested the ideas to disperse LED light - filing off the top was not as good as frosting them!!

read all about it here: http://gotwind.org/led_experiments.htm

Worth a try I think!

Hi Guys,
There is a single wire that feeds the lights on the pod.
Me being stupid I want to keep it simple, as me you know put something in line job done
So which resistor do I need and how do I fit it ?
Series is in line ? Parallel is bridged ?
Kris

OK it really is guesswork with out knowing how much current the LEDs are drawing.
Maplin do some high power resistors.
http://www.maplin.co.uk/Search.aspx?men ... 0Wirewound

I'd experiment with the 100 ohm 7 Watt ones.
A single resistor in the feed will probably do the job, if it is too dim you could try a 47 ohm one instead.

T

28 LEDs is that any use?
Would it be an idea to fit a variable? & again if so which one?
I'm going back to Maplins
Kris

If you can hang on till Tuesday I will check my stock, I should have several high power (5/10W) wire wound potentiometers that will solve your problem. You will be able to adjust the brightness as desired. Maplin do not do them anymore. If I have a suitable one you can have it for free!