This design is a battery charger/discharger and the discharge portion=20
of the device will dissipate around 100W-120W with both channels on.

It is designed to give a measure of capacity of battery packs.

The users expect it to handle a relatively high amount of power.

It's not even close to green.   :-)

Mark Skeels
Engineer
Competition Electronics, Inc.
TEL: 815-874-8001
FAX: 815-874-8181
www.competitionelectronics.com

On 9/15/2010 10:16 AM, Forrest Christian wrote:
>    In this day and age, I would think quite a few times about anything
> which dissipates any amount of heat, since heat is generally a
> indication that the design isn't very green, which isn't very popular
> nowadays.
>
> Unless you have a good reason for it, and can explain it in a way that
> makes sense, I would avoid anything which gets much above ambient.   And
> by 'explain', things like my motorola droid which gets hot when charging
> plus navigating plus setting in the sun on my dash makes sense.   Or say
> if you were doing something very computing intensive and it gets hot
> when you do that - I.E. heat from heavy work is acceptable, heat when
> idle or under simple tasks is not.
>
> -forrest
>
> On 9/15/10 7:51 AM, Mark E. Skeels wrote:
>>     I am working on a consumer product that will be used by people
>> generally a bit more technically oriented than your average person.
>>
>> It dissipates a fair amount of power at times and so it can generate a
>> fair amount of heat.
>>
>> It will be used in a residential, indoors environment......on a table or
>> a bench.
>>
>> My question is this: What is a reasonable/acceptable upper limit for
>> maximum exterior surface temperature given these circumstances?
>>
>> Is there an accepted specification(s) for something like this?
>>
>> I am thinking maybe 60 deg C........?
--=20
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