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Screen driven EL36 / 6CM5 /PL36 /25E5
Screen driven EL36 / 6CM5 /PL36 /25E5
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Old 26th February 2006, 08:33 AM   #1
Tubes4e4 is offline Tubes4e4  Germany
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Default Screen driven EL36 / 6CM5 /PL36 /25E5

Hi folks,

since there has been some discussion on screen driven deflection tubes here recently, I measured EL36 prebiased with Eg1 = -15V, -20V and -25V (for Eg1 = 0, there is a Philips/Miniwatt sheet available somewhere on the Žnet).

In the case of EL36, while very good linearity can be obtained (if you use a CF driver for g2 being strong enough), I really think it is not worth the effort: Just take a look at the EL36 trioded strapped (extended range) curves which can be found at the same location at my web site.

EL36 screen driven and triode strapped curves

If in doubt, just measure.
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Old 26th February 2006, 09:04 AM   #2
Zen Mod is offline Zen Mod  Serbia
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Screen driven EL36 / 6CM5 /PL36 /25E5
Default Re: Screen driven EL36 / 6CM5 /PL36 /25E5

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Old 26th February 2006, 12:00 PM   #3
Fuling is offline Fuling  Sweden
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Great info!
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Old 23rd November 2017, 06:57 AM   #4
Bigun is offline Bigun  Canada
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Screen driven EL36 / 6CM5 /PL36 /25E5
Tom, links dont work so cant see anything of your project?
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.
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Old 23rd November 2017, 07:46 AM   #5
aardvarkash10 is offline aardvarkash10  New Zealand
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Originally Posted by Bigun View Post
Tom, links dont work so cant see anything of your project?
Tom took down his site a while back. You might try the wayback machine for access to old pages...
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