[Amps] Tunned Input

[Larry Benko]

The calculator below gives incorrect results:

For example Zsource = 50+j0, Zload=30+j0, Q=2.5, Freq = 14MHz produces
C(source side) = 413pF, L = .716uH, & C(load side) = 320pF which does 
NOT match

The calculator at https://www.eeweb.com/toolbox/pi-match produces for 
the same data as above
C(source side) = 568pF, L = .340uH, & C(load side) = 694pF which does 
match & has a Q of 2.5.

Better yet, download the free program SimSmith at 
http://www.ae6ty.com/smith_charts.html
and learn how to do matching without needing a formula from someone 
else.  I have a YouTube channel at
https://www.youtube.com/channel/UCKSyLSu4fm_1RHoO3Jvk4YQ or go to 
YouTube & search for W0QE
which has over 30 videos describing the use of SimSmith with these types 
of topics.

73,
Larry, W0QE


On 5/16/2017 8:52 PM, Jim W7RY wrote:
> Here is a link for a calculator:
>
> https://wetnet.net/rf_design/pinet.main.cgi   I use a Q of 2.5.
>
>
>
>
>
> 73
> Jim W7RY
>
>
>
> -----Original Message----- From: Michael J Talkington
> Sent: Tuesday, May 16, 2017 7:58 PM
> To: amps at contesting.com
> Subject: [Amps] Tunned Input
>
> I am looking for the math formula to build a pi network tuned input. I 
> find charts but want the formula . Thanks Mike N8FWD
>
> Get Outlook for iOS<https://aka.ms/o0ukef>
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