KPA100 Measurements

[Ian Maude]

Hi all,
Getting to the exciting bit of the amp now :-)

A quick question about the measurements on page 43 of the manual.  There
are 4 to check.

D13 Cathode: 90 to 150V (I get 128.3V so ok)
U4 pin 8: -5 to -25V (I get -22.6V)
TP1: 0 to 0.1V (I get 1.5mV)

The last one is where my question is ...

J3 +lead: 0V (I get 130mV)

Is this acceptable?  Everything else seems ok.  If not, any ideas on
where to look?

Ian
--
Ian Maude G0VGS Morecambe Lancs UK | [hidden email]
Sysop of GB7MBC, the Morecambe Bay Cluster
Running Linux and DXSpider | K2 #4044
 
Find out about Summits on the Air!  
Visit the SOTA web site at http://www.sota.org.uk

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[Ward Willats-3]

>Is this acceptable?  Everything else seems ok.  If not, any ideas on
>where to look?

Not sure if this has anything to do with what you are seeing, but...

How close is your work light to the finals? Does the measurement
change when you move the light away?

http://www.ac6rm.net/mailarchive/html/elecraft-list/2003-11/msg00574.html

-- Ward / KG6HAF
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[Ian Maude]

On Sat, 2004-07-03 at 20:12, Ward Willats wrote:
> >Is this acceptable?  Everything else seems ok.  If not, any ideas on
> >where to look?
>
> Not sure if this has anything to do with what you are seeing, but...
>
> How close is your work light to the finals? Does the measurement
> change when you move the light away?
Thanks for the link Ward!  I turned everything off and the voltage
dropped.  I then disconnected the power from the K2 and I am sitting
here watching the voltage rise :)

I would never have thought of that one but it appears to be the answer!

Ian

--
Ian Maude G0VGS Morecambe Lancs UK | [hidden email]
Sysop of GB7MBC, the Morecambe Bay Cluster
Running Linux and DXSpider | K2 #4044
 
Find out about Summits on the Air!  
Visit the SOTA web site at http://www.sota.org.uk

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