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Right.
There is often an indicator on one of the two feed wires: black, white,
red line on one of the wires, indicating this is the positive wire.
Kees Oudesluijs
Op 29-2-2016 om 19:29 schreef Michael Oritt:
> Thanks all for the many responses and now that I know I will not blow
> the LEDs should I wire things backwards I will find a replacement
> transformer and proceed. With no way of knowing which of the two wires
> that run to the LED string my chances are 50-50 I will get it right,
> but if not I will simply reverse leads.
>
> Best--Michael Oritt
>
> On Mon, Feb 29, 2016 at 1:01 PM, Richard Ewald
>
> 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
>
> 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
> *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 class="moz-cite-prefix">Right.<br>
There is often an indicator on one of the two feed wires: black,
white, red line on one of the wires, indicating this is the
positive wire.<br>
Kees Oudesluijs<br>
<br>
<br>
<br>
Op 29-2-2016 om 19:29 schreef Michael Oritt:<br>
</div>
<blockquote
cite="mid:CAPTa0B5m_GY2cJyudCsDeEgZBvh-+Bj-j_Kyoqe5iMq3WeLuQg@mail.gmail.com"
type="cite">
<meta http-equiv="Context-Type" content="text/html; charset=UTF-8">
<div dir="ltr">
<div class="gmail_default">Thanks all for the many responses and
now that I know I will not blow the LEDs should I wire things
backwards I will find a replacement transformer and proceed.Â
With no way of knowing which of the two wires that run to the
LED string my chances are 50-50 I will get it right, but if
not I will simply reverse leads.</div>
<div class="gmail_default"><br>
</div>
<div class="gmail_default">Best--Michael Oritt </div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Feb 29, 2016 at 1:01 PM,
Richard Ewald <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:richard.ewald@gmail.com"
target="_blank">richard.ewald@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote">
<div dir="ltr">The part that bothers me is the 24V. That is
way, more voltage than an LED is supposed to run on.Â
There needs to be a dropping resistor in the circuit or
the LEDs will go up in smoke.
<div>Rick</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">
<div>
<div class="h5">On Mon, Feb 29, 2016 at 9:49 AM, Mike
Garvey <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:r3m1g4@verizon.net" target="_blank"><a
class="moz-txt-link-abbreviated"
href="mailto:r3m1g4@verizon.net">r3m1g4@verizon.net</a></a>></span>
wrote:<br>
</div>
</div>
<blockquote class="gmail_quote">
<div>
<div class="h5">
<div lang="EN-US">
<div>
<p class="MsoNormal"><span>Some LEDs have
built-in steering diodes (as in a full
wave bridge rectifier) and will run on
either polarity. <span>Â </span>In theory,
this should allow them to run on AC
supplies as well.</span></p>
<p class="MsoNormal"><span>Mike</span></p>
<p class="MsoNormal"><span>Â </span></p>
<div>
<p class="MsoNormal"><b><span>From:</span></b><span>
Healeys [mailto:<a
moz-do-not-send="true"
href="mailto:healeys-bounces@autox.team.net"
target="_blank"><a
class="moz-txt-link-abbreviated"
href="mailto:healeys-bounces@autox.team.net">healeys-bounces@autox.team.net</a></a>]
<b>On Behalf Of </b>Michael Oritt<br>
<b>Sent:</b> Monday, February 29, 2016
12:14 PM<br>
<b>To:</b> Austin Healey<br>
<b>Subject:</b> [Healeys] LED
polarity</span></p>
</div>
<span>
<p class="MsoNormal">Â </p>
<div>
<div>
<p class="MsoNormal"><span>This really
is not a car-related question though
I guess we could make it into
one:</span></p>
</div>
<div>
<p class="MsoNormal"><span>Â </span></p>
</div>
<div>
<p class="MsoNormal"><span>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.Â
I can find a replacement transformer
online. </span></p>
</div>
<div>
<p class="MsoNormal"><span>Â </span></p>
</div>
<div>
<p class="MsoNormal"><span>Here's the
question: Â 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?</span></p>
</div>
<div>
<p class="MsoNormal"><span>Â </span></p>
</div>
<div>
<p class="MsoNormal"><span>Best--Michael
Oritt</span></p>
</div>
</div>
</span></div>
</div>
<br>
</div>
</div>
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