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What is U? What is a circle with a line through it mean? Is this some Euro-stuff? I have been electronics for 30+ years and have never seen these symbols. Without any text explaining the figure (or figure numbers for that matter) the drawing is pretty much worthless. Leaves you to guess what Ri means and which is the force and sensing nodes. How about junking this figure and using the one below it with some text to explain what is going on. I actually know how 4 point Kelvin sensing works but if I were a youngster trying to figure it out this article would not teach me much. — Preceding unsigned comment added by 99.47.12.18 ( talk) 16:20, 20 November 2012 (UTC)
Totally agree. To make the drawing accessible / understandable to a wider audience, suggest using simpler symbols for current and voltage.
Stop trying to be "fancy". Simple is best. — Preceding
unsigned comment added by
203.192.179.253 (
talk)
02:28, 6 August 2013 (UTC)
I have added two links in related articles, so I have removed the {{linkless|September 2006}} tag. DFH 16:45, 1 December 2006 (UTC)
Anyone else agree that we could well rename this article as Kelvin sensing ? DFH 16:47, 1 December 2006 (UTC)
Merge this with the "Kelvin bridge" article? —Preceding unsigned comment added by 81.241.237.111 ( talk) 11:14, 16 December 2009 (UTC)
In the Heat Transfer field, I hear "Four Point Probe" most often, "Four Terminal" second, and had never heard the measurement called a Kelvin Bridge before I came to this article. — Preceding unsigned comment added by 71.206.170.21 ( talk) 19:04, 8 April 2012 (UTC)
A writer called Vessels42 went to some trouble to write a new section on this topic in the Resistivity article, so I rescued it in case I decide to merge it in to this article later:
-- Heron
How come the graphic has dutch words? Anybody want to photoshop the words into english? ROOD = red Wit = White I havn't a clue what the other words mean eximo ( talk) 18:52, 23 February 2010 (UTC)
I don't understand the claim that the sense wires must be the inner wires. If anything, I would argue they must be the outer wires. Reason: if "inner" means they attach to the resistor inbound from the current terminals, then the sense terminals are picking up the voltage across a subset of the whole resistor, so the reading would be in error (too low). Conversely, if you attach the sense points outbound from the current terminals, you have some resistor in series with the sense wires. But since the sense wire current is nearly zero (precisely zero, in the case of a bridge) that extra resistance does not have any effect. Paul Koning ( talk) 18:12, 23 March 2011 (UTC)
![]() | This article is rated Start-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||
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What is U? What is a circle with a line through it mean? Is this some Euro-stuff? I have been electronics for 30+ years and have never seen these symbols. Without any text explaining the figure (or figure numbers for that matter) the drawing is pretty much worthless. Leaves you to guess what Ri means and which is the force and sensing nodes. How about junking this figure and using the one below it with some text to explain what is going on. I actually know how 4 point Kelvin sensing works but if I were a youngster trying to figure it out this article would not teach me much. — Preceding unsigned comment added by 99.47.12.18 ( talk) 16:20, 20 November 2012 (UTC)
Totally agree. To make the drawing accessible / understandable to a wider audience, suggest using simpler symbols for current and voltage.
Stop trying to be "fancy". Simple is best. — Preceding
unsigned comment added by
203.192.179.253 (
talk)
02:28, 6 August 2013 (UTC)
I have added two links in related articles, so I have removed the {{linkless|September 2006}} tag. DFH 16:45, 1 December 2006 (UTC)
Anyone else agree that we could well rename this article as Kelvin sensing ? DFH 16:47, 1 December 2006 (UTC)
Merge this with the "Kelvin bridge" article? —Preceding unsigned comment added by 81.241.237.111 ( talk) 11:14, 16 December 2009 (UTC)
In the Heat Transfer field, I hear "Four Point Probe" most often, "Four Terminal" second, and had never heard the measurement called a Kelvin Bridge before I came to this article. — Preceding unsigned comment added by 71.206.170.21 ( talk) 19:04, 8 April 2012 (UTC)
A writer called Vessels42 went to some trouble to write a new section on this topic in the Resistivity article, so I rescued it in case I decide to merge it in to this article later:
-- Heron
How come the graphic has dutch words? Anybody want to photoshop the words into english? ROOD = red Wit = White I havn't a clue what the other words mean eximo ( talk) 18:52, 23 February 2010 (UTC)
I don't understand the claim that the sense wires must be the inner wires. If anything, I would argue they must be the outer wires. Reason: if "inner" means they attach to the resistor inbound from the current terminals, then the sense terminals are picking up the voltage across a subset of the whole resistor, so the reading would be in error (too low). Conversely, if you attach the sense points outbound from the current terminals, you have some resistor in series with the sense wires. But since the sense wire current is nearly zero (precisely zero, in the case of a bridge) that extra resistance does not have any effect. Paul Koning ( talk) 18:12, 23 March 2011 (UTC)