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T match circuit

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Old 07-05-2011, 12:21 PM
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Default T match circuit


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.


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Old 07-05-2011, 06:45 PM
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Quote:
Originally Posted by Crusher View Post
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.
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.
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Old 07-05-2011, 06:50 PM
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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.

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Old 07-05-2011, 07:33 PM
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You might be able to get it low enough with just a trimmer cap.

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Old 07-05-2011, 08:07 PM
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http://www.ameritron.com/pdffiles/AL-811H.pdf

Page 10 will give the cap and inductance specifications, should work the same as the 572B for the tuned input.

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Old 07-07-2011, 03:56 AM
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Checked link, thanks. Should work great.

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Old 07-07-2011, 04:15 AM
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Good deal let us know how it turns out.

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Old 07-09-2011, 02:31 PM
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Quote:
Originally Posted by Crusher View Post
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.
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.

.

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