preps
Results 1 to 4 of 4

Thread: strapping pills

  1. #1
    Join Date
    Jul 2014
    Location
    ohio
    Posts
    4
    Thanks
    5
    Thanked 0 Times in 0 Posts
    Downloads
    0
    Uploads
    0

    strapping pills

    what good does strapping pills in a amp do ????

  2. #2
    Join Date
    Jul 2013
    Location
    Port Orange. FL
    Posts
    1,135
    Thanks
    299
    Thanked 406 Times in 269 Posts
    Downloads
    0
    Uploads
    0
    Use a piece of RG-58U outer shied of the coax and solder it across the 2 collector tabs over top of the
    pills. this reduces heat in the transistor and resistance in the collector
    circuit. it also increases conductivity over the thin metal collector tabs on
    the pill
    this is called strapping the finals.
    BE SURE that you do this on the collector tabs ONLY!!! if you do this across
    the emitter and base tabs, you'll have major problems.
    Hope tins helps. Not an amp expert but found this through a search. It may help with keeping stray rf down.

  3. The Following User Says Thank You to 222DBFL For This Useful Post:

    masonic46 (08-04-2014)

  4. #3
    Join Date
    May 2014
    Location
    nj
    Posts
    46
    Thanks
    0
    Thanked 15 Times in 11 Posts
    Downloads
    5
    Uploads
    0
    If you are having problems with stray rf though you would be better off adding more rf bypass to B+.

  5. The Following User Says Thank You to 856 For This Useful Post:

    masonic46 (08-06-2014)

  6. #4
    Join Date
    Apr 2013
    Location
    Louisville, KY
    Posts
    190
    Thanks
    12
    Thanked 209 Times in 95 Posts
    Downloads
    26
    Uploads
    0
    You strap the emitters not the collectors. You will destroy your amp if you strap the collectors, or at least make it nonfunctional.

    The purpose of strapping is to reduce the RF/DC resistance to ground. The circuit boards really do not allow the transistors to carry the full power potential. Use grounding straps or even large solder braid. Do not fill the the braid with solder because you want the individual wires free to carry the RF power. It's called skin effect.

    Tallman
    Last edited by Tallman; 08-06-2014 at 09:36 AM.
    All answers are opinions and may, or may not be technically correct.

  7. The Following User Says Thank You to Tallman For This Useful Post:

    masonic46 (08-06-2014)

Visitors found this page by searching for

None

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •