1. You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.

T match circuit

Discussion in 'Amplifiers' started by Crusher, Jul 5, 2011.

  1. Crusher

    Crusher
    Expand Collapse
    Well-Known Member

    Joined:
    May 12, 2007
    Messages:
    643
    Likes Received:
    121
    Thinking about doing a T match circuit for input of a 4 tube 572B box. but never did one. Can anyone pont me in the right direction? Thanks in advance.


     

  2. VA3ES

    VA3ES
    Expand Collapse
    Old Buzzard

    Joined:
    Oct 30, 2010
    Messages:
    645
    Likes Received:
    64
    T-match circuits are typically used for antenna systems that have a wide range of reactances/impedances. Why do you want to use it on the input of an amp? I use a common pi-network matcher on my untuned amp. Works great.
     
  3. Crusher

    Crusher
    Expand Collapse
    Well-Known Member

    Joined:
    May 12, 2007
    Messages:
    643
    Likes Received:
    121
    yeah i can use a couple of trimmer caps. just i seen a few using the 2 inductors and1 tuning capacitor and wanted to try it. trying to save a few dollars in parts.
     
  4. JoeDirt

    JoeDirt
    Expand Collapse
    Active Member

    Joined:
    Dec 15, 2008
    Messages:
    223
    Likes Received:
    29
    You might be able to get it low enough with just a trimmer cap.
     
  5. wavrider

    wavrider
    Expand Collapse
    W9WDX Amateur Radio Club Member

    Joined:
    Jun 2, 2009
    Messages:
    2,788
    Likes Received:
    632
  6. Crusher

    Crusher
    Expand Collapse
    Well-Known Member

    Joined:
    May 12, 2007
    Messages:
    643
    Likes Received:
    121
    Checked link, thanks. Should work great.
     
  7. wavrider

    wavrider
    Expand Collapse
    W9WDX Amateur Radio Club Member

    Joined:
    Jun 2, 2009
    Messages:
    2,788
    Likes Received:
    632
    Good deal let us know how it turns out.
     
  8. paws264

    paws264
    Expand Collapse
    Active Member

    Joined:
    Apr 6, 2005
    Messages:
    647
    Likes Received:
    4
    I thought that T-network were primarily High Pass Filter; shows you what I know....

    Electrically, in your application, the "T-Match" is a paralled tuned circuit that will be fed with a Capacitor that is tapped somewhere down the coil.

    Stick with the tried and trusted Pi-network.

    .
     
  9. Crusher

    Crusher
    Expand Collapse
    Well-Known Member

    Joined:
    May 12, 2007
    Messages:
    643
    Likes Received:
    121
    yeah, sticking with pi circuit. Seems way simpler and more straight forward
     

Share This Page

Members Online Now

  1. Radio Tech,
  2. Robb,
  3. wavrider,
  4. 222DBFL,
  5. AK100,
  6. llilillill,
  7. camaro1
Total: 268 (members: 8, guests: 172, robots: 88)