AC bridges for measuring inductance

Discussion in 'Feedback and Suggestions' started by oz7acs, Jul 21, 2007.

  1. oz7acs

    Thread Starter New Member

    Jul 21, 2007
    I think this website is a nice initiative and have some questions and comments to the paragraph "AC bridges" under Chapter 12: "AC Metering Circuits" in volume II - AC:
    1) In the Maxwell-Wien bridge did you consider what the upper practical frequency limit for measurement of inductance with common practical components might be for a certain error limit?
    2) In other litterature I saw a postulate that the Maxwell bridge was most suited for coils with a low Q. Do you agree on this and if so why is this limit there?
    3) Did you consider to discuss the Radio Frequency bridge, which should be more versatile in measuring a complex impedance by the substitution method?
    4) AC bridges is claimed in the litterature to be very accurate, which is probably true for low frequencies f<1MHz, but at higher frequencies f>1MHz wouldn't an LC-resonance circuit be a better choice in order to find an unknown reactive component, where the other is known, especially if C is known with ESR and fmax and L wants to be found?
    Proposed litterature:
    1) "Student Reference Manual for Electronic Instrumentation Laboratories" by Stanley Wolf and Richard F.M. Smith at Prentice-Hall 1990.
    2) "Electronic Instruments and Measurements" 2.ed. by Larry Jones and A. Foster Chin, Prentice-Hall 1991.
    3) "Alternating Current Bridge Methods" by B. Hague, Sir Isaac Pitman & Sons, Ltd. 1959.
  2. Dave

    Retired Moderator

    Nov 17, 2003
    Moved back to the Comments and Feedback forum at the author's request.

  3. Dave

    Retired Moderator

    Nov 17, 2003