[Lab] AC adapter question

[Michael Grant]

That's almost 9 amps ...

Michael


On Thu, Jul 11, 2013 at 7:42 PM, Britta Evans-Fenton <technical at artengine.ca
> wrote:

> sorry that was a Maybe I AM drawing too many Amps.  (thanks for the help
> Darcy)
>
> Britta
> *Technical Coordinator *
> Artengine.ca
>
> Ottawa Mini Maker Faire
> Aug. 31 & Sept. 1 2013
> www.makerfaireottawa.com
> @MakerFaireOTT
> #MMFO
>
>
> On Thu, Jul 11, 2013 at 4:41 PM, Britta Evans-Fenton <
> technical at artengine.ca> wrote:
>
>> Maybe I'm drawing too much Amps.  Would you recommend this AC converter
>> over the last one:
>> http://www.digikey.ca/product-detail/en/LS150-5/285-1817-ND/1918828
>>
>> I would have Amps to spare on this one.
>>
>> Britta
>> *Technical Coordinator *
>> Artengine.ca
>>
>> Ottawa Mini Maker Faire
>> Aug. 31 & Sept. 1 2013
>> www.makerfaireottawa.com
>> @MakerFaireOTT
>> #MMFO
>>
>>
>> On Thu, Jul 11, 2013 at 4:32 PM, Britta Evans-Fenton <
>> technical at artengine.ca> wrote:
>>
>>> There are 188 IR leds:
>>> http://www.digikey.ca/product-detail/en/QED233/QED233-ND/187410  All
>>> connected in parallel each with their own Resistor ( 91 OHM 1/4W 5% CARBON
>>> FILM)
>>>
>>> Britta
>>> *Technical Coordinator *
>>> Artengine.ca
>>>
>>> Ottawa Mini Maker Faire
>>> Aug. 31 & Sept. 1 2013
>>> www.makerfaireottawa.com
>>> @MakerFaireOTT
>>> #MMFO
>>>
>>>
>>> On Thu, Jul 11, 2013 at 4:00 PM, Ken <klmckinnon at rogers.com> wrote:
>>>
>>>>  It should power a LOT of LED's.  How many were you using and what
>>>> sort of current limiting resistor did you have....a quick circuit diagram
>>>> would tell a lot.
>>>>
>>>> Ken
>>>>
>>>>
>>>> On 7/11/2013 6:49 PM, Britta Evans-Fenton wrote:
>>>>
>>>>  A little question about AC adapters.
>>>>
>>>>  I have an artwork that I did that I used an AC adapter to get power.
>>>>  It was on for 4 days during a show, and I was surprised on how hot it got.
>>>>  (I almost burned myself).  I did have duct tape on it holding it to the
>>>> back of a wall, so that may have been half the problem.
>>>>
>>>>  I'm showing the work again, but I'm wanting to make sure everything
>>>> is safe.  I need to hide the adapter due to aesthetic reasons, so I wanted
>>>> to create a little white box around it with air holes, and I was suggested
>>>> a fan, although it if it getting hot due to over working, adding another
>>>> fan might not be a good idea.
>>>>
>>>>  It is only a bunch of IR leds that it is powering, so I'm surprised
>>>> at the power I am needing.
>>>>
>>>>  any help would be very well appreciated.
>>>>
>>>>
>>>>  Here is the Adapter I used :
>>>>
>>>> http://www.digikey.ca/product-detail/en/VGS-25-5/102-1928-ND/2045659
>>>>
>>>>
>>>>  Here are the IR LEDS:
>>>>
>>>> http://www.digikey.ca/product-detail/en/QED233/QED233-ND/187410
>>>>
>>>>
>>>>  And the Resistors I have on them were 91 OHM 1/4W 5% CARBON FILM.
>>>>
>>>>
>>>>   Britta
>>>>  *Technical Coordinator *
>>>>  Artengine.ca
>>>>
>>>> Ottawa Mini Maker Faire
>>>> Aug. 31 & Sept. 1 2013
>>>> www.makerfaireottawa.com
>>>> @MakerFaireOTT
>>>> #MMFO
>>>>
>>>>
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>>>>
>>>>
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>>>
>>>
>>
>
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