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Elektrotechnische Meßinstrumente

Elektrotechnische Meßinstrumente


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About the Book

Einteilnng nnd Allgemeines. Ebenso wie im gewohnlichen Leben zur BeurteiIung einer Sache, z. B. ihr Gewicht, ihr Inhalt, ihre Lange oder andere MaBe wichtig sein konnen, so ist fUr die Beurteilung des elektrischen Stromes die Kenntnis der verschiedenen elektrischen Werte erforderlich, wie Stromstarke, Spannung, Leistling, Arbeit, Phasenverr: chiebung, Wechselzahl usw. Diese Werte lassen sich nun mit Instrumenten messen, ganz ahnlich wie man das Gewicht eines Gegenstandes mit einer Fed- wage bestimmt, und zwar: die Stromstarke mit dem Strom- messer (Amperemeter), die Spannung mit dem Spannungs- messer (Voltmeter), die Leistung mit dem Leistungs- messer (Wattmeter), die Phasenverschiebung mit dem Phasenmesser, die Wechselzahl mit dem Frequenz- messer, den Widerstand mit dem Wider- standsmesser (Ohmmeter), Abb. 1. chalttafelvoltmeter fUr Aufbau von Hartmann & Braun. die Arbeit mit dem Zahler. Hierbei konnen die Instrumente entweder fUr Gleichstrom oder fiir -Wechselstrom (Ein - oder Mehr- phasenstrom, Drehstrom) bestimmt sein. Demnach unterscheidet man: a) Gleichstrominstrumente, b) Wechselstrominstrumente. Es gibt auch Instrumente, die fUr beide Stromarten, Gleich- und Wechselstrom, verwendbar sind. Zur Messung der obengenannten Werte, z. B. zur Messung der Strom starke mit dem Amperemeter, konnen verschiedene Typen in Anwendung kommen, je nach dem physikalischen Grundgesetz, auf welchem das betreffende Instrument aufgebaut ist. Man unterscheidet demnach: 1. Elektromagnetische Instrumente, 2. Drehspulinstrumente, 3. Hitzdrahtinstrumente, 4. Elektrostatische Instrumente, 5. Elektrodynamische Instrumente, G r u h u, MeJJinstrumente. 2. Auf!. Einleitung. 2 6. Drehfeldinstrumente, 7. Resonanzinstrumente, 8. Hilfsapparate: Vorwiderstande, Nebenwiderstande, MeBwandler, Relais u. a. m.


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Product Details
  • ISBN-13: 9783642897788
  • Publisher: Springer-Verlag Berlin and Heidelberg GmbH & Co. KG
  • Binding: Paperback
  • Height: 229 mm
  • No of Pages: 228
  • Series Title: German
  • Sub Title: Ein Leitfaden
  • Width: 152 mm
  • ISBN-10: 3642897789
  • Publisher Date: 01 Jan 1923
  • Edition: 0002-Softcover Repri
  • Language: German
  • Returnable: N
  • Spine Width: 13 mm
  • Weight: 372 gr


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