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RE: [OT - ish] - Quick and easy LED - Resistance Calculator...


  • To: <ukha_d@xxxxxxx>
  • Subject: RE: [OT - ish] - Quick and easy LED - Resistance Calculator...
  • From: "Dave McLaughlin" <dave@xxxxxxx>
  • Date: Tue, 12 Aug 2003 22:15:49 +0100
  • Mailing-list: list ukha_d@xxxxxxx; contact ukha_d-owner@xxxxxxx
  • Reply-to: ukha_d@xxxxxxx

Seems OK to me. The actual calcs are very simple in the first place if you
know the values to put in the formula. You get these from the LED
datasheets
anyway.

(Vsupply - Vled (forward voltage)) / Current in amps

Dave...
-----Original Message-----
From: Wayne [mailto:wayne@xxxxxxx]
Sent: 12 August 2003 19:00
To: ukha_d@xxxxxxx
Subject: [ukha_d] [OT - ish] - Quick and easy LED - Resistance
Calculator...


Its amazing what you can google these days...

In looking for a method to calculate what size resistor I need to do a
'power on' led for some 12 volt PC fans - I came accross this litt'l n.

http://home.cogeco.ca/~rpaisley4/LEDcalc.html

Dunno if the results are accurate (maybe an electronics wizz can
verify?) - but It saves me on the maths anyways!

Enjoy!

Wayne.

[Non-text portions of this message have been removed]



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