[Premium-Rx] Wellbrook excellence !

[Carcia, Francis A HS]

 I've tested the push pull version with 9.5 dB gain biased at 65 ma each
device and the dynamic range is higher than I can measure with my pair
of 8640Bs. I figure at least 110 dB dynamic range. 


-----Original Message-----
From: premium-rx-bounces at ml.skirrow.org
[mailto:premium-rx-bounces at ml.skirrow.org] On Behalf Of Bjarne Mjelde
Sent: Tuesday, November 21, 2006 5:08 PM
To: premium-rx at ml.skirrow.org
Subject: Re: [Premium-Rx] Wellbrook excellence !

 From what I know, Andy uses a Norton push-pull amp.  A description of a

similar amp is found on 
http://www.kongsfjord.no/dl/Amplifiers/Ultralinear%202N5109%20And%202N30
53%20Amplifiers.pdf

Bjarne Mjelde
www.kongsfjord.no
arcticdx.blogspot.com

Alberto di Bene skrev:
>> Of course, the other great advantage is that the ALA100 is shipped as
a
>> small black box and you locally supply the wire to make it work !  No
>> problems with postage etc.
>>
>>     
>
>   I know that I am asking almost the impossible, but does anybody
knows if/where the schematic of that loop amplifier is 
> available ? It shouldn't be rocket science, after all, just a well
designed amplifier, with a careful choice of 
> components. Something that many could be able to replicate for their
personal use, without infringing any patents...(and 
> saving some money)  :-)
>
> 73  Alberto  I2PHD
>
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