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Replacing those 'can' type electros

Discussion in 'Electronic Repair' started by tempus fugit, Apr 10, 2005.

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  1. tempus fugit

    tempus fugit Guest

    Hey all;

    I've got an old tube amp with a lot of hum so I am going to replace the
    filter caps. The problem is, they are in a can. The can says
    10uF 350 (with a little trangle beside it)
    10uF 350 (with a little square beside it)
    2uF 350

    I think I can figure that part out. The can has 3 terminals and is grounded
    to the chassis. Can I assume from this that each of the terminals is the +
    of the cap and the - is connected to ground? Also, how do I figure out which
    terminal goes to which cap? What do the triangle and square mean?

  2. On the bottom, you'll see corresponding triangles, squares, etc., to identify
    the positive terminals. The negatives are the can unless otherwise indicated.

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  3. Mr. Land

    Mr. Land Guest

    There are 3 separate electrolytics in that can. As you guessed, all of
    their negatives are tied together. If you look at the terminals you
    should see the corresponding triangle and square, identifying the
    postive terminals for the 10uF portions.

    Good luck with the hum...
  4. tempus fugit

    tempus fugit Guest

    Thanks a lot guys. That explains the shapes...
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