Re: 12V LED
- From: "Bob Eldred" <nsmontassoc@xxxxxxxxx>
- Date: Sat, 09 Apr 2005 15:33:59 GMT
<bakechad@xxxxxxxxxxxxx> wrote in message
news:1112991007.039095.50210@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> I am new to electronics and am trying to wire a LED to light up when a
> 12V fan is on. I understand about using a resistor inline with a LED
> that has a typical voltage of less than 12V.
>
> My question is: "if I use a 12V LED like this
>
>
http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=CTLG%5F011%5F006%5F001%5F000&product%5Fid=276%2D084#
>
> Do I need to use a resistor in this situation?
>
> Thanks
Pay attention to this very complicated answer: NO! No resister is needed.
Ready made lamps like this already have the resistor included inside and are
rated for the required voltage, in this case 12VDC. There are versions of
these lamps that have a diode and resistor for 120VAC, directly, no external
components.
Bob
.
- References:
- 12V LED
- From: bakechad
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