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NNTP-Posting-Date: Thu, 21 Nov 2002 09:23:17 -0600
Subject: Re: 9VDC Heater?
Date: Thu, 21 Nov 2002 07:23:17 -0800
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On Thu, 21 Nov 2002 15:06:35 GMT, John Popelish
>> I'm wondering if it's possible to use a 9V battery to heat a coil of
>> wire or a metal plate to around 125 degrees Celsius. Warmup time isn't
>> a concern; I just need the plate to be at ~125 or more degrees Celsius
>> for about five seconds, powered from a 9V battery. Whether or not it
>> uses all of the charge in the battery is not a concern.
>> Thanks in advance.
>It all depends on the size of the plate. A 1 mm square plate can be
>held at this temperature for quite a while by an alkaline 9 volt
>battery. If the coil of wire can be approximated with a small metal
>film resistor (say, 1/4 watt) it is a piece of cake.
Could you tell me how you came to this conclusion? If there are any
formulas that I can use to determine how much power is required to
heat a certain sized metal plate to a certain temperature, I'm
oblivious to what they are and would be very grateful if you could
provide them. :) Just knowing some of the proper terminologies and
what to search for on google would be a great help.
Thanks in advance.
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