• Home
  • Download PDF
  • Order CD-ROM
  • Order in Print
CAUTION - 14188_106
SUMMARY - 14188_108

Neets Module 16-Introduction to Test Equipment
Page Navigation
  86    87    88    89    90  91  92    93    94    95    96  
3-31 SUMMARY The important points of this chapter are summarized in the following paragraphs. You should be familiar with these points before continuing with your study of test equipment. A permanent-magnet, moving-coil meter movement (D’ARSONVAL movement) uses the interaction of magnetic fields to produce movement. DAMPING is used to smooth out the vibration and to help prevent overshooting of the meter pointer. ELECTRODYNAMOMETER movements are usually used in wattmeters. They operate much like the D’Arsonval meter movement, except field coils are used instead of a permanent magnet. Electrodynamometer movements measure either ac or dc without the use of a rectifier.






Western Governors University

Privacy Statement
Press Release
Contact

© Copyright Integrated Publishing, Inc.. All Rights Reserved. Design by Strategico.