Sujet : Re: dumping a lot of heat
De : JL (at) *nospam* gct.com (john larkin)
Groupes : sci.electronics.designDate : 07. Dec 2024, 18:43:27
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <e329ljplsv9fv4ejl2m98pl0vp4s8a4e1f@4ax.com>
References : 1 2
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On Sat, 7 Dec 2024 17:24:49 -0000 (UTC), Hul Tytus <
ht@panix.com>
wrote:
I have used some 2 watt resistors that showed about 600 degf by
iron/constantan but a red glow within could be seen by eye. Well above
stated limits of 2 watts. Can't remember the name they went by
but they were'nt wound types.
The aluminum housed resisters are handy. 50 watt types have
done much duty here.
Hul
I had a case where there was a powerup surge, and it destroyed the big
Mil-type alum case resistors. They generally opened and shorted to the
case.
The Welwyn thick-film porcelain-on-steel things worked great, bolted
to the chassis.