[Amps] FW: pi to pi-L o/p matching question

[Larry Carman]

Tony,
   Thanks for the suggestion. I'll work on adding a drop down box to select
the tube family. For the short haul I'll just increase the AB2 to 1.65.
Not sure where I might get the tube family info, so if anyone can
help I'd greatly appreciate it.
Regards,
Larry N5BIP

-----Original Message-----
From: Tony King - W4ZT [mailto:amps at w4zt.com]
Sent: Saturday, May 21, 2005 11:11 PM
To: Larry Carman
Cc: amps at contesting.com
Subject: Re: [Amps] FW: pi to pi-L o/p matching question


Larry,

Your Plate Load calculator for an AB2 amp seems to be using a constant
of about 1.55 which might be a bit on the low side.  The 8877 might be
close at 1.6 but a number of other tubes would be closer to 1.8 to 2. I
wondered what you used to determine the constant?  If there was another
input field to select a tube "family" to set the constant it might be
helpful.

Good job!

73, Tony W4ZT

Larry Carman wrote:

>Here's the address to a pi and pi-l calculator I wrote using PHP for
>anyones use ... http://www.pinebeetle.net/amplifier_main.html
>Regards,
>Larry N5BIP
>
>-----Original Message-----
>From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com]On
>Behalf Of Neil Carr G0JHC
>Sent: Friday, May 20, 2005 1:15 PM
>To: amps at contesting.com
>Subject: [Amps] pi to pi-L o/p matching question
>
>
>When going from a Pi to a Pi-L, is the required value of C2 increased or
>decreased?
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>Thanks de Neil G0JHC
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