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Thread: How do I ground the grids on the SB-220

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  1. #1
    Join Date
    May 2009
    Location
    Toronto
    Posts
    184

    Default How do I ground the grids on the SB-220

    Hello,
    I am working on a SB-220 amp that I just bought and have read where it make sense to ground the grids of the 3-500Z directly, I think that I understand how to do this but would like to know if anyone has done this and what is the correct method, some PICs would also be helpful.

    73
    Peter
    ve3pcd

  2. #2
    Join Date
    Feb 2005
    Location
    Orlando, Florida
    Posts
    1,030

    Default

    Without commenting on whether it's the right thing to do, to ground the grids you connect them to ground. Yes, it's really that simple.
    73 de N4CR, Phil

  3. #3
    Join Date
    Jan 2000
    Location
    Kilowatt Alley
    Posts
    9,824

    Default

    Towards the bottom of this page;
    http://www.bcdxc.org/heathkit_sb220_mods.htm

    If you Google something like "grounding grids of SB-220" there will be some stuff to read about it.

    And BE CAREFUL poking around in that thing!
    "Oh what a tangled web we weave when first we practice to receive."
    -Otto Watt Sept. 5 1925

  4. #4
    Join Date
    May 2009
    Location
    Toronto
    Posts
    184

    Default

    Thanks to all, after posting this question I figured it out which was rather very simple.

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