Connect with us

capacitor question on lundahl pulse transformer input

Discussion in 'General Electronics Discussion' started by bazz, Jan 11, 2018.

Scroll to continue with content
  1. bazz

    bazz

    12
    0
    Jul 11, 2017
    hi ive recently replaced the pulse transformer in my metrum octave dac with a lundahl 1572 ,it requires a .01 cap on the input which i fitted ,then i noticed downstream was a SMC capacitor ,the value i know not(KA5 ???) IMG_20180108_233318(2).jpg ,my question is should i bypass the SMC cap with the one ive fitted,or ditch the one ive fitted and use the SMC cap ?

    this is the original pulse transformer
    IMG_20180105_204544.jpg

    and the new one -input below the 2,earth below 1,both connected to the resister ,input also connected to the cap
    IMG_20180108_233347.jpg


    looks like KA5 printed on the cap ?
     

    Attached Files:

  2. davenn

    davenn Moderator

    13,596
    1,875
    Sep 5, 2009

    if you cannot find service info for the board, then you will have to remove the cap and measure it with a capacitance meter
    it's value could be anything between 10nF and 100nF (.01uF to .1uF)
     
  3. Harald Kapp

    Harald Kapp Moderator Moderator

    10,068
    2,150
    Nov 17, 2011
  4. bazz

    bazz

    12
    0
    Jul 11, 2017
    many thanks, looks like its the wrong value,so ive bypassed it with great results,thanks.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-