Re: dumping a lot of heat

Liste des GroupesRevenir à se design 
Sujet : Re: dumping a lot of heat
De : JL (at) *nospam* gct.com (john larkin)
Groupes : sci.electronics.design
Date : 07. Dec 2024, 18:43:27
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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.


Date Sujet#  Auteur
4 Dec 24 * dumping a lot of heat58john larkin
4 Dec 24 +* Re: dumping a lot of heat5Joe Gwinn
6 Dec 24 i`* Re: dumping a lot of heat4Lasse Langwadt
6 Dec 24 i `* Re: dumping a lot of heat3Joe Gwinn
7 Dec 24 i  `* Re: dumping a lot of heat2Lasse Langwadt
8 Dec 24 i   `- Re: dumping a lot of heat1Joe Gwinn
4 Dec 24 +- Re: dumping a lot of heat1Arie de Muijnck
4 Dec 24 +* Re: dumping a lot of heat5Liz Tuddenham
9 Dec 24 i`* Re: dumping a lot of heat4john larkin
9 Dec 24 i +- Re: dumping a lot of heat1Liz Tuddenham
9 Dec 24 i `* Re: dumping a lot of heat2ehsjr
9 Dec 24 i  `- Re: dumping a lot of heat1john larkin
5 Dec 24 +* Re: dumping a lot of heat3Martin Rid
5 Dec 24 i`* Re: dumping a lot of heat2john larkin
6 Dec 24 i `- Re: dumping a lot of heat1Martin Rid
5 Dec 24 +- Re: dumping a lot of heat1Jan Panteltje
5 Dec 24 +* Re: dumping a lot of heat35Liz Tuddenham
5 Dec 24 i+* Re: dumping a lot of heat26legg
5 Dec 24 ii+* Re: dumping a lot of heat2john larkin
6 Dec 24 iii`- Re: dumping a lot of heat1KevinJ93
5 Dec 24 ii`* Re: dumping a lot of heat23Liz Tuddenham
7 Dec 24 ii `* Re: dumping a lot of heat22legg
7 Dec 24 ii  `* Re: dumping a lot of heat21john larkin
8 Dec 24 ii   +- Re: dumping a lot of heat1legg
8 Dec 24 ii   `* Re: dumping a lot of heat19Liz Tuddenham
8 Dec 24 ii    +* Re: dumping a lot of heat4Phil Hobbs
8 Dec 24 ii    i`* Re: dumping a lot of heat3john larkin
8 Dec 24 ii    i +- Re: dumping a lot of heat1Liz Tuddenham
8 Dec 24 ii    i `- Re: dumping a lot of heat1Phil Hobbs
8 Dec 24 ii    `* Re: dumping a lot of heat14Jan Panteltje
8 Dec 24 ii     `* Re: dumping a lot of heat13Liz Tuddenham
8 Dec 24 ii      +* Re: dumping a lot of heat9john larkin
8 Dec 24 ii      i`* Re: dumping a lot of heat8Liz Tuddenham
8 Dec 24 ii      i `* Re: dumping a lot of heat7john larkin
8 Dec 24 ii      i  +* Re: dumping a lot of heat5Liz Tuddenham
8 Dec 24 ii      i  i`* Re: dumping a lot of heat4john larkin
9 Dec 24 ii      i  i `* Re: dumping a lot of heat3Liz Tuddenham
9 Dec 24 ii      i  i  `* Re: dumping a lot of heat2john larkin
9 Dec 24 ii      i  i   `- Re: dumping a lot of heat1ehsjr
9 Dec 24 ii      i  `- Re: dumping a lot of heat1Jan Panteltje
9 Dec 24 ii      `* Re: dumping a lot of heat3Jan Panteltje
9 Dec 24 ii       `* Re: dumping a lot of heat2Liz Tuddenham
9 Dec 24 ii        `- Re: dumping a lot of heat1Jan Panteltje
5 Dec 24 i`* Re: dumping a lot of heat8john larkin
5 Dec 24 i `* Re: dumping a lot of heat7Liz Tuddenham
6 Dec 24 i  `* Re: dumping a lot of heat6John R Walliker
6 Dec 24 i   `* Re: dumping a lot of heat5Liz Tuddenham
6 Dec 24 i    `* Re: dumping a lot of heat4john larkin
6 Dec 24 i     +* Re: dumping a lot of heat2Liz Tuddenham
7 Dec 24 i     i`- Re: dumping a lot of heat1john larkin
7 Dec 24 i     `- Re: dumping a lot of heat1Jan Panteltje
5 Dec 24 +* Re: dumping a lot of heat2legg
5 Dec 24 i`- Re: dumping a lot of heat1john larkin
7 Dec 24 +* Re: dumping a lot of heat2Hul Tytus
7 Dec 24 i`- Re: dumping a lot of heat1john larkin
8 Dec 24 +* Re: dumping a lot of heat2Klaus Vestergaard Kragelund
8 Dec 24 i`- Re: dumping a lot of heat1john larkin
9 Dec 24 `- Re: dumping a lot of heat1john larkin

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