[AMRadio] Need some help here

[Bill Smith]

----- Original Message -----
From: "Dan Hall" <kj7fx at tdn.com>
To: <amradio at mailman.qth.net>
Sent: Monday, March 04, 2002 4:08 PM
Subject: Re: [AMRadio] Need some help here


<interesting comments snipped>
>
> Lets say for sake of arguement that I want to shoot for 2000VDC at 400mils
>

2000 VDC @ 0.4A = 800W input, perhaps 560W output at 70% eff.
fo = 3875  Rp = 2777 ohms (use 2700 ohm film resistor)
Q=12

PI-L Component values.  C1 is usually tunable.  C2 must be very close to the
indicated value of 545pf.

C1 = 104pf
C2 = 545pf

L1 = 21.3 uH
L2 = 5.2 uH

                                            L1                L2
    2700 ohms >-----||-----mmmm-------mmm--------o 50 ohms  <Autek RF
Analyst
  |  (from tube plate      |                   |
  |    to ground)           C1              C2
  |                                   |                   |
 gnd                           gnd             gnd

> Thanks Bill, and I think this stuff is of great use for most on the list.

Good luck, and look forward to hearing the beast on the air.  Makes all this
fun!
Note these values are at some variance with published tables.   They are
obtained from a procedure spelled out in the 1995 ARRL Handbook pp
13.9-13.10.

73 de Bill, AB6MT
billsmith at ispwest.com


>
> Dan
>
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