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Author Topic: Practical LED usage...  (Read 1099 times)

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Online Zogbert Splod

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Practical LED usage...
« on: May 09, 2015, 09:19:58 pm »
This is not a heavy theory article.  It's just a way to let someone change the brightness of an LED to suit the use to which it is being put.  It can also be used to balance the brightness of more than one LED.  Different colours can look different in brightness, this will allow you to make them look closer to one another.

The 'how to' is not universal and may possibly not suit your application.  If this is the case - ASK!

It's a PDF


Regards, Allan.....
« Last Edit: January 09, 2017, 12:48:41 pm by Only Me »
"When in trouble, when in doubt, run (trains) in circles..." etc.
There, doesn't that feel better? 
Lovely!

Planning thread:
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I may appear to be listening to you, but inside my head, I'm playing with my trains.

Online Only Me

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Re: Practical LED usage...
« Reply #1 on: January 09, 2017, 12:49:22 pm »
Try Now Alan @Zogbert Splod



Online Zogbert Splod

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Re: Practical LED usage...
« Reply #2 on: January 09, 2017, 01:58:42 pm »
"When in trouble, when in doubt, run (trains) in circles..." etc.
There, doesn't that feel better? 
Lovely!

Planning thread:
http://www.ngaugeforum.co.uk/SMFN/index.php?topic=25873.0

My website: Zog Trains

Run what thou wilt shall be the whole of the law
I may appear to be listening to you, but inside my head, I'm playing with my trains.

Steamie+

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Re: Practical LED usage...
« Reply #3 on: February 09, 2017, 06:00:19 am »
This is not a heavy theory article.  It's just a way to let someone change the brightness of an LED to suit the use to which it is being put.  It can also be used to balance the brightness of more than one LED.  Different colours can look different in brightness, this will allow you to make them look closer to one another.

The 'how to' is not universal and may possibly not suit your application.  If this is the case - ASK!

It's a PDF


Regards, Allan.....


Thanks for that info, but itís still to heavy for me  :dunce: not really the best at taking in electrical stuff at all,but i do get there in the end.   :thumbsup:

Offline RMurphy195

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Re: Practical LED usage...
« Reply #4 on: March 02, 2017, 10:33:04 pm »

Thanks for that info, but itís still to heavy for me  :dunce: not really the best at taking in electrical stuff at all,but i do get there in the end.   :thumbsup:

All LED's need a resistor to limit the current otherwise they will blow up.

The higher the resistance (bigger the resistor), the dimmer the LED will be.

The excellent PDF article shows you how to work out what the minimum resistance needs to be, and how to work out how much to increase it to get the brightness you want.

 

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