Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site petrus.UUCP Path: utzoo!watmath!clyde!burl!ulysses!gamma!epsilon!zeta!sabre!petrus!karn From: karn@petrus.UUCP (Phil R. Karn) Newsgroups: net.analog,net.puzzle Subject: Re: Thevinin/Norton equivalents (SPOILER) Message-ID: <623@petrus.UUCP> Date: Fri, 4-Oct-85 17:24:04 EDT Article-I.D.: petrus.623 Posted: Fri Oct 4 17:24:04 1985 Date-Received: Sat, 5-Oct-85 07:12:51 EDT References: <488@nsc-pdc.UUCP> Distribution: na Organization: Bell Communications Research, Inc Lines: 10 Xref: watmath net.analog:480 net.puzzle:1028 You can't, if you're allowed only to see how the two terminals behave to external circuits; they're equivalent. However, with the terminals open-circuited, the black box with the current source will be dissipating 1 watt of power, while the the one with the voltage source will not be dissipating anything. Short the terminals and the situation reverses. Stick each box into a picnic cooler with a thermometer, and wait. This is the only way I see to solve the puzzle. Phil Brought to you by Super Global Mega Corp .com