Article View: sci.materials
Article #84Re: Negative resistance
From: John Whitmore
Date: Tue, 04 Aug 1992 05:18
Date: Tue, 04 Aug 1992 05:18
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In article <13404@creare.COM> kwg@creare.UUCP (Kent Goeking) writes: > I would like to know if there are any materials that demonstrate negative > resistance on the macroscopic scale. I am aware of this behavior in tunnel > diodes but I wonder if it might not occur in other structures. The classic example is a neon lamp; resistance is high until one reaches the breakover voltage, then it drops (because the gas becomes ionized). Some semiconductors have similar properties, when they are undoped, because avalanche conduction makes new charge carriers (and lowers the resistance). John Whitmore p.s. negative resistance is also possible in some AC circuits, if the right kinds of tricks are played... this is a kind of trick for analyzing oscillator circuits.
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arc1-ca.pugleaf.net!sparky!uunet!usc!sdd.hp.com!uakari.primate.wisc.edu!usenet.coe.montana.edu!news.u.washington.edu!milton.u.washington.edu!whitReferences:
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Path: arc1-ca.pugleaf.net!sparky!uunet!usc!sdd.hp.com!uakari.primate.wisc.edu!usenet.coe.montana.edu!news.u.washington.edu!milton.u.washington.edu!whit From: whit@milton.u.washington.edu (John Whitmore) Newsgroups: sci.materials Subject: Re: Negative resistance Summary: tunnel diodes and neon lamps Message-ID: <1992Aug4.051826.10582@u.washington.edu> Date: 4 Aug 92 05:18:26 GMT References: <13404@creare.COM> Sender: news@u.washington.edu (USENET News System) Organization: University of Washington, Seattle Lines: 19