[Healeys] LED polarity

[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 <richard.ewald at gmail.com>
wrote:

> 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 at 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 at 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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>>
>
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