+ Reply to Thread
Results 1 to 4 of 4

Thread: Inductor DCR Measurement

  1. #1
    Join Date: Dec 2018

    Location: Alford Lincolnshire

    Posts: 84
    I'm William.

    Default Inductor DCR Measurement

    Hi Guys

    I want to upgrade the inductors in my ML speakers, I know the inductance 2.5mH but I have no idea of the DCR. Having done some research I understand that the DCR is crucial. However, it is not available. There are no markings on the installed inductors so I have drawn a blank there.

    I would appriciate your thoughts please.

    Many thanks

    Regards

    Bill

  2. #2
    Join Date: Apr 2012

    Location: N E Kent

    Posts: 51,624
    I'm Geoff.

    Default

    If you know the wire gauge, then you can measure the inductor cross section and core size, then look online for the length of that wire required to produce a 2.5 mH inductor of those dimensions. I'm supposing that info is available. If it is, then see if you can find the DCR for that length of wire somewhere, I reckon it should be available, probably on one of the speaker building sites.
    It is impossible for anything digital to sound analogue, because it isn't analogue!

  3. #3
    Join Date: Oct 2012

    Location: The Black Country

    Posts: 6,089
    I'm Alan.

    Default

    You can measure it with a standard multimeter, but not to great accuracy if it is fractions of an ohm.

    A more accurate method would be to put a known current through the inductor, say 1 amp, then measure the voltage across the inductor with the millivolt range on the multimeter.

    For every millivolt on the reading that is a milliohm of resistance.

  4. #4
    Join Date: Sep 2014

    Location: brighton uk.

    Posts: 4,737
    I'm jamie.

    Default

    if your feeling flush treat yourself to the dats v2 software,it has built in capacitor,inductor and resistor measuring software.
    My System
    John Wood KT88 Amp.
    Paradise Phono Stage
    Sony TTS-8000 Turntable.
    PMAT-1010 MK6 Tonearm.
    Ortofon Cadenza Bronze
    Sony X555ES Cd Player
    Yamaha NS1000m Speakers

+ Reply to Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •