| Author |
Message |
Craig colliass (Craig_colliass)
Member
Username: Craig_colliass
Post Number: 8
Registered: 3-2007
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| Posted on Tuesday, March 18, 2008 - 9:59 am: |
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Hi i have got a 24volt led indicator for my heavy weight robot i hope to run it at 36 volts from time to time. what resistor do i have to put in series to adjust the voltage to 24 volts for the LED |
Admin (Admin)
Board Administrator
Username: Admin
Post Number: 739
Registered: 10-2004
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| Posted on Tuesday, March 18, 2008 - 12:50 pm: |
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Craig,
R=(36-24)/I where I is the nominal current (A) drawn by the LED at 24V. |
Craig colliass (Craig_colliass)
Member
Username: Craig_colliass
Post Number: 9
Registered: 3-2007
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| Posted on Thursday, March 20, 2008 - 9:12 am: |
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It is LED 24V Yellow Chrome Recessed - Part No: 2210-020 I don't know the value for I current drawn at 24v. do you have this information? |
Admin (Admin)
Board Administrator
Username: Admin
Post Number: 741
Registered: 10-2004
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| Posted on Saturday, March 22, 2008 - 9:34 am: |
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Craig,
It's a single chip LED and thus draws a standard 20mA so you would need a 600 Ohm resistor of over 0.24W. I would suggest a 680R resistor part number 2001-560 which are supplied in packs of 10 for 39p. |
Craig colliass (Craig_colliass)
Member
Username: Craig_colliass
Post Number: 10
Registered: 3-2007
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| Posted on Sunday, March 30, 2008 - 1:00 pm: |
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That will be on the next shopping list manny thanks
Craig |
