Article View: sci.electronics
Article #21641Re: HV Cap Fun!
From: Arnie Frisch
Date: Mon, 05 Jun 1989 15:43
Date: Mon, 05 Jun 1989 15:43
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In article <1989Jun3.211635.2752@utzoo.uucp>, henry@utzoo.uucp (Henry Spencer) writes: > In article <747@eplunix.UUCP> raoul@eplunix.UUCP (Otero) writes: > >What about superconducting materials? No resistive heat dissipation at all. > > Nope, sorry, wrong: superconductors have zero resistance only for DC. > Running AC through a superconductor does produce heat. > -- > You *can* understand sendmail, | Henry Spencer at U of Toronto Zoology Also, superconductors can not conduct infinite currents, the maximum current is limited by the magnetic field it produces - which ultimately causes the conductor to go "normal". This puzzle has been beaten to death. There is no puzzle now, nor was there one 30 years ago when I first heard it. There are no perfect conductors, or capacitors, or inductors. The capacitors wind up at 5 volts, and the extra energy goes into heat and em radiation. Let's kill it!
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!lll-winken!uunet!zephyr!tektronix!tekcrl!tekgvs!arniefReferences:
<4924@m2c.M2C.ORG> <3806@mit-amt> <20772@quacky.mips.COM> <1989Jun3.211635.2752@utzoo.uucp>Show Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!lll-winken!uunet!zephyr!tektronix!tekcrl!tekgvs!arnief From: arnief@tekgvs.LABS.TEK.COM (Arnie Frisch) Newsgroups: sci.electronics,sci.physics Subject: Re: HV Cap Fun! Summary: Right, and they also don't conduct infinite currents.... Message-ID: <5274@tekgvs.LABS.TEK.COM> Date: 5 Jun 89 15:43:12 GMT References: <4924@m2c.M2C.ORG> <3806@mit-amt> <20772@quacky.mips.COM> <1989Jun3.211635.2752@utzoo.uucp> Followup-To: sci.electronics,sci.physics,poster Organization: Tektronix Inc., Beaverton, Or. Lines: 20