[Moon-net] ALL: Burn in a filament

[Pat Barthelow]

Hello Kim,

It is my understanding that the "Getter" effect you are looking for is not 
created by the hot filament, but rather a hot Plate, one that shows color 
due to significant  current flow.  The hot plate, has a coating that when 
hot, ( The dull brownish or grayish coating on the outside of the plate.) 
"Gets" the oxygen from the free space in the tube by combining with the 
plate material... but I may be wrong...

As I remember, lighting the filament, without plate voltage/current can help 
revive a thoriated filament (Like the 4-1000A)  by increasing the filament 
emission by raising to the surface of the filament, the thorium component, 
and making for more available emission of electrons.


73, DX, de Pat AA6EG aa6eg at hotmail.com;
Skype: Sparky599
Moon or Bust!--Jamesburg Gang Rides Again!





>From: "Kim Liljekrans" <oz5iq at privat.dk>
>To: <Moon-net at list-serv.davidv.net>
>Subject: [Moon-net] ALL: Burn in a filament
>Date: Sat, 3 Mar 2007 17:09:10 +0100
>
>HI gang
>
>I need some experience :
>
>have set  up  a 4CX1000 with only filament ON, and have slowly raised  (
>over a few hours) the votage up to
>the normally used ie. 5.8 V  measured at the socket.
>
>How long time is  nessary  for achieving the " normal max vacuum"  again  
>??
>
>
>I think this has is of  general interest , so PSE answer via the net 
>(direct
>is OK as well TOO.
>
>VY 73  de  OZ5IQ, Kim    ( OZ1EME as well)
>
>
>
>
>
>
>_______________________________________________
>Moon-Net posting and subscription instructions are at 
>http://www.nlsa.com/nets/moon-net-help.html
>