Author Topic: Valve Base  (Read 41906 times)

Offline Darren

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Re: Valve Base
« Reply #75 on: May 19, 2009, 07:49:04 PM »




Darren,

Do the filaments need to run that hot?  :bugeye: Granted, my experience with tubes is about 35 years in the past, but I only remember the cathodes glowing a warm red, even the radar magnetrons, not bright enough to read the newspaper by.  I suspect that there is a reason, but it exacpes me.

Weston

Thorated fillaments, designed for such abuse, it excites the electrons better.

Talking of heat, the valve sits there at around 200 deg C, you could do toast with them. Certainly don't need the heating on.

Brill for the winter  :)
You will find it a distinct help… if you know and look as if you know what you are doing. (IRS training manual)

Offline Darren

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Re: Valve Base
« Reply #76 on: May 19, 2009, 07:56:37 PM »


A bit of Jazz type stuff I think (Darren will tell you) True, very clear.



Diana Krall


BTW, if you thinks that was loud, the 833 amp is 50W....
You will find it a distinct help… if you know and look as if you know what you are doing. (IRS training manual)

Offline Weston Bye

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Re: Valve Base
« Reply #77 on: May 19, 2009, 07:58:28 PM »
 "...it excites the electrons better".

Indeed, any more and they will be launching Photon Torpedoes.
Weston Bye
Practitioner of the Electromechanical Arts.
author of The Mechatronist column
Digital Machinist magazine

Offline Divided he ad

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Re: Valve Base
« Reply #78 on: May 20, 2009, 02:34:52 AM »
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I'll put some Slade on for you next time Ralph, that works well  :thumbup:

Oh yer!  :headbang:  Slade is good!


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Diana Krall
Another name to investigate!



Quote
BTW, if you thinks that was loud, the 833 amp is 50W....
Your going to hurt the neighbours ears!!  :lol: 



Ralph.
I know what I know and need to know more!!!