Airframe as Return Leg of Electrical Circuits

Discussion in 'Instruments / Avionics / Electrical System' started by GESchwarz, Sep 9, 2019.

Help Support HomeBuiltAirplanes Forum by donating:

  1. Sep 16, 2019 #81

    Dan Thomas

    Dan Thomas

    Dan Thomas

    Well-Known Member

    Joined:
    Sep 18, 2008
    Messages:
    4,857
    Likes Received:
    2,070
    I remember those. Got my share of shocks off them too while fixing the TVs.

    Those were the days. When consumer-grade electronic stuff was repairable. No more.
     
  2. Sep 16, 2019 #82

    rv7charlie

    rv7charlie

    rv7charlie

    Well-Known Member

    Joined:
    Nov 17, 2014
    Messages:
    435
    Likes Received:
    170
    Location:
    Jackson
    Yeah, when I owned a repair shop, I really worked at being a boss who could delegate. TVs got delegated. :)

    However, I can still feel the hole that the 700+VDC plate circuit in a Marshall guitar amp blew in my finger.
     
  3. Sep 17, 2019 #83

    C Michael Hoover

    C Michael Hoover

    C Michael Hoover

    Member

    Joined:
    Aug 24, 2019
    Messages:
    13
    Likes Received:
    5

    The stuff I use is made by Harger (of lightning protection fame) and is a copper bearing antioxidant joint compound. Vaseline and the Permatix (as well as others) products are insulators and depend on the "wiping" ability of the contact to ensure a good contact. Thence the insulate the contact from outside corrosive influence. The product that I use enhances the contact as well as keeps outside corrosive influences out.

    Further to "rv7cdharlie": Proper installation of a screw and ring terminal termination requires the use of a proper lock washer, rendering any potential loosening of the screw connection an infinitesimally low probably. Tab terminals do loose their tension no matter how much one wishes that they don't. I have trouble shot many, many problems to them over many years.
     

Share This Page

arrow_white