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I can't find an answer that isn't an engineering paper, so I'll ask it here and hope for a simple answer. When choosing a heatsink for a device, such as a voltage regulator, is a higher or lower thermal resistance rating of the heatsink the most efficient?
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It's weird, because it WAS working fine..... -
A lower thermal resistance is more efficient. It will give a lower temperature rise per Watt dissipated.WARNING! Musical Instrument amplifiers contain lethal voltages and can retain them even when unplugged. Refer service to qualified personnel.
REMEMBER: Everybody knows that smokin' ain't allowed in school ! -
Lower thermal resistance is what you want.
Temperature difference is analogous to voltage difference, heat flow to current. So thermal resistance is how many degrees difference does it take to make a watt move, and the units are generally quoted in degrees-C per W. Low thermal resistance (low degrees C per watt moved) means that the place that's making the heat doesn't rise many degrees for every watt it has to get rid of.
EDIT: ACK!! Simulpost. L.T.'s right.Amazing!! Who would ever have guessed that someone who villified the evil rich people would begin happily accepting their millions in speaking fees!
Oh, wait! That sounds familiar, somehow.Comment
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Thanks guys for the quick and succinct replies.It's weird, because it WAS working fine.....Comment
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