>-----Original Message-----
>From: =D6mer Yalhi [mailto:oyalhi@TEKSAN.COM.TR]=20
>Sent: 16 January 2004 10:44
>To: PICLIST@MITVMA.MIT.EDU
>Subject: Re: [EE:] About test boxes (hot and cold)
>
>
>Russel thank you for the answer.  I will do a search for=20
>Peltier and environmental chamber and see what comes up and go=20
>from there.  I need something that I can set between -25=B0C to=20
>+75=B0C (-13=B0F to +167=B0F) plus or minus 5=B0C, I don't need a very=20
>precise instrument.
>
>Thank you,

I doubt very much if a cheap food cooler will be able to get anywhere near
the temperatures you want, especialy the lower range.  If the products that
you are testing at these low temperatures dissipate much power, then using
thermoelectric coolers will be difficult.  Liquid cooling the hot side of
the cooler is almost certainly going to be needed.

A proper environmental chamber is what you require, unfortunately they are
large, noisy, power hungry and most of all expensive.  However, there are
businesses that rent out time on their chambers, you just turn up with your
product and test equipment.

Regards

Mike




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