English

English Bahasa Indonesia Deutsch Español Français Italiano Nederlands Polski Português Svenska Tiếng Việt Türkçe Русский العربية فارسی हिन्दी 한국어 中文日本語

File:A_moving_coil_galvanometer._Wellcome_M0016397.jpg · Wikimedia Commons · See Wikimedia Commons

EntityQ179472· pop 67· linked from 214 articles

galvanometer

thumb|320px|An early D'Arsonval galvanometer showing magnet and rotating coil

AI overview

A galvanometer is an instrument that detects and measures small electric currents by using a magnet to make a coil rotate, with the amount of rotation indicating the strength of the current. It was an important early tool for studying electricity and became the foundation for modern electrical measuring devices like ammeters and voltmeters.

AI-generated from the Wikipedia summary — may contain errors.

Wikidata facts

Image: A moving coil galvanometer. Wellcome M0016397.jpg

Show 2 more facts

Commons category: Galvanometers
name in kana: けんりゅうけい

Sources (4)

via Wikidata · CC0

~22 min read

Article

22 sections

Contents

Operation
Uses
Modern uses
Past uses
History
Hans Christian Ørsted
Schweigger and Ampère
Poggendorff and Thomson
Georg Ohm
D'Arsonval and Deprez
Edward Weston
Taut-band movement
Types
Tangent galvanometer
Theory
Geomagnetic field measurement
Astatic galvanometer
Mirror galvanometer
Ballistic galvanometer
See also
References
External links

thumb|320px|An early D'Arsonval galvanometer showing magnet and rotating coil

A galvanometer is an electromechanical measuring instrument for electric current. Early galvanometers were uncalibrated, but improved versions, called ammeters, were calibrated and could measure the flow of current more precisely. Galvanometers work by deflecting a pointer in response to an electric current flowing through a coil in a constant magnetic field. The mechanism is also used as an actuator in applications such as hard disks.