File:Null-balance voltmeter.png

Null-balance_voltmeter.png(579 × 237 pixels, file size: 6 KB, MIME type: image/png)

Summary

Description
English: An illustration for how to use a potentiometer and known voltage supply to measure a voltage across a portion of an unknown circuit. The potentiometer's resistance is changed at the wiper until the null detector shows zero voltage between the two circuits.

where Vt: Voltage across test points Vk: Known voltage Re: Potentiometer resistance from one end terminal to the other end terminal

Rw: Potentiometer resistance from wiper to end terminal
Date
Source Own work
Author User:A-Day

Licensing

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This licensing tag was added to this file as part of the GFDL licensing update.
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. Subject to disclaimers.


Original upload log

The original description page was here. All following user names refer to en.wikipedia.
Date/Time Dimensions User Comment
2005-08-21 20:31 579×237× (6249 bytes) A-Day An illustration for how to use a potentiometer and known voltage supply to measure a voltage across a portion of an unknown circuit. The potentiometer's resistance is changed at the wiper until the null detector shows zero voltage between the two circuits
2005-08-21 19:46 579×237× (6140 bytes) A-Day An illustration for how to use a potentiometer and known voltage supply to measure a voltage across a portion of an unknown circuit. The potentiometer's resistance is changed at the wiper until the null detector shows zero voltage between the two circuits

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Date/TimeThumbnailDimensionsUserComment
current02:25, 29 June 2020Thumbnail for version as of 02:25, 29 June 2020579 × 237 (6 KB)BigrTexTransferred from en.wikipedia via #commonshelper
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