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The part that bothers me is the 24V. That is way, more voltage than an LED
is supposed to run on. There needs to be a dropping resistor in the
circuit or the LEDs will go up in smoke.
Rick
On Mon, Feb 29, 2016 at 9:49 AM, Mike Garvey <r3m1g4@verizon.net> wrote:
> Some LEDs have built-in steering diodes (as in a full wave bridge
> rectifier) and will run on either polarity. In theory, this should allow
> them to run on AC supplies as well.
>
> Mike
>
>
>
> *From:* Healeys [mailto:healeys-bounces@autox.team.net] *On Behalf Of *Michael
> Oritt
> *Sent:* Monday, February 29, 2016 12:14 PM
> *To:* Austin Healey
> *Subject:* [Healeys] LED polarity
>
>
>
> This really is not a car-related question though I guess we could make it
> into one:
>
>
>
> I have some 24VDC outdoor LED lighting and the wall-plug type transformer
> is defective. I cannot determine which of the two fine wires that run to
> the appliance (LED's) is positive. I can find a replacement transformer
> online.
>
>
>
> Here's the question: I understand that LEDs are polarity-sensitive and if
> I wire them up backwards will I destroy the LEDs or can I simply reverse
> the polarity?
>
>
>
> Best--Michael Oritt
>
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<div dir=3D"ltr">The part that bothers me is the 24V.=C2=A0 That is way, mo=
re voltage than an LED is supposed to run on.=C2=A0 There needs to be a dro=
pping resistor in the circuit or the LEDs will go up in smoke.<div>Rick</di=
v></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Mon, F=
eb 29, 2016 at 9:49 AM, Mike Garvey <span dir=3D"ltr"><<a href=3D"mailto=
:r3m1g4@verizon.net" target=3D"_blank">r3m1g4@verizon.net</a>></span> wr=
ote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border=
-left:1px #ccc solid;padding-left:1ex"><div lang=3D"EN-US" link=3D"blue" vl=
ink=3D"purple"><div><p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;=
font-family:"Calibri","sans-serif";color:#1f497d">Some =
LEDs have built-in steering diodes (as in a full wave bridge rectifier) and=
will run on either polarity. <span>=C2=A0</span>In theory, this should all=
ow them to run on AC supplies as well.<u></u><u></u></span></p><p class=3D"=
MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Calibri",=
"sans-serif";color:#1f497d">Mike<u></u><u></u></span></p><p class=
=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Calibri&qu=
ot;,"sans-serif";color:#1f497d"><u></u>=C2=A0<u></u></span></p><d=
iv style=3D"border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0i=
n 0in"><p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-famil=
y:"Tahoma","sans-serif"">From:</span></b><span style=3D=
"font-size:10.0pt;font-family:"Tahoma","sans-serif""> H=
ealeys [mailto:<a href=3D"mailto:healeys-bounces@autox.team.net"; target=3D"=
_blank">healeys-bounces@autox.team.net</a>] <b>On Behalf Of </b>Michael Ori=
tt<br><b>Sent:</b> Monday, February 29, 2016 12:14 PM<br><b>To:</b> Austin =
Healey<br><b>Subject:</b> [Healeys] LED polarity<u></u><u></u></span></p></=
div><span class=3D""><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p><div><d=
iv><p class=3D"MsoNormal"><span style=3D"color:#3333ff">This really is not =
a car-related question though I guess we could make it into one:<u></u><u><=
/u></span></p></div><div><p class=3D"MsoNormal"><span style=3D"color:#3333f=
f"><u></u>=C2=A0<u></u></span></p></div><div><p class=3D"MsoNormal"><span s=
tyle=3D"color:#3333ff">I have some 24VDC outdoor LED lighting and the wall-=
plug type transformer is defective.=C2=A0 I cannot determine which of the t=
wo fine wires that run to the appliance (LED's) is positive.=C2=A0 I ca=
n find a replacement transformer online.=C2=A0<u></u><u></u></span></p></di=
v><div><p class=3D"MsoNormal"><span style=3D"color:#3333ff"><u></u>=C2=A0<u=
></u></span></p></div><div><p class=3D"MsoNormal"><span style=3D"color:#333=
3ff">Here's the question: =C2=A0I understand that LEDs are polarity-sen=
sitive and if I wire them up backwards will I destroy the LEDs or can I sim=
ply reverse the polarity?<u></u><u></u></span></p></div><div><p class=3D"Ms=
oNormal"><span style=3D"color:#3333ff"><u></u>=C2=A0<u></u></span></p></div=
><div><p class=3D"MsoNormal"><span style=3D"color:#3333ff">Best--Michael Or=
itt<u></u><u></u></span></p></div></div></span></div></div><br>____________=
___________________________________<br>
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<br></blockquote></div><br></div>
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