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Varistor size?

Discussion in 'General Electronics Discussion' started by haammerz, Nov 26, 2017.

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  1. haammerz

    haammerz

    2
    0
    Nov 26, 2017
    hi all
    I want to protect the contacts of a relay switch an inductive load & have been advised that if I place a MOV across the contact this will do the job.
    I have also read that the correct size for 220 vac is 220 x 1.5 x root 2 = 460v
    I was wondering if this sounds right & also I had a quick look at available items but find that there is a great price variation from 50p each upwards so was wondering what the difference in quality between the price range would be.
     
  2. Bluejets

    Bluejets

    4,991
    1,048
    Oct 5, 2014
    What level of current are you expecting?
     
  3. Minder

    Minder

    3,103
    664
    Apr 24, 2015
    Snubber simpler?
    Unfortunately you cannot load very high files to this site so I could not show the design details.
    M.
     

    Attached Files:

  4. haammerz

    haammerz

    2
    0
    Nov 26, 2017
    about 0.5A
     
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