[Amps] Pi-Output Tank Component Voltages?

[Larry Benko]

Mike,

Not sure how seriously you want to understand everything but here is 
what I believe is one of the better ways to do it.

1.) Go to http://tonnesoftware.com and download Jim's PI-EL software.  
It runs fine on WinXP and Win7.  The program is totally free.
2.) If you really only want to analyze a Pi network and not a PI-L then 
use the same intermediate impedance value as the load and the program 
will only generate a PI network.  Uou control the plate voltage swing, 
Q, etc. of the network.
3.) Download the free LTSpice program from 
http://www.linear.com/designtools/software/ which is also a totally free 
program and runs on all Windows platforms and is one of the best free 
programs available PERIOD!  You can learn more with LTSpice than you 
could ever imagine.
4.) Use the PI-EL program to write a Spice file and then use LTSPice to 
analyze every voltage and current for a given network.
5.) To analyze effects of various impedances for a 2:1 SWR use 25+j0, 
100+j0, 40+j30, and 40-j30 (which are all 2:1 equally spaced SWRs in a 
50 ohm system) in the PI-EL program.  You will be able to see what 
component values are needed and what voltage and current differences 
there are.

This may sound like a lot of work but this problem would only require 
about 10 minutes once you are familiar with the programs.  This will 
give you real data and not just "seat of the pants" guesses.

73,
Larry, W0QE


On 3/10/2012 1:13 PM, Mr Mike wrote:
> In a Pi-Network Output Matching Circuit fed through a Plate Blocking Capacitor, how does one calculate/guesstimate the RF voltage across the various components? In my case I am in the process of homebrewing an amp based upon the GS-35b. Plate Voltage will be ~ 3600 volts @ 1 A max. Matching into 50 +/- , lets say SWR up to 2:1.
>
>
> Any Input appreciated...POSITIVE INPUT greatly appreciated =0)
>
> AC2Q
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