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Old 28th April 2012, 02:45 PM   #691
Zen Mod is offline Zen Mod  Serbia
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so , don't worry

regarding software tools on vt52 , look harder

due to frame based site , I can't give you direct link
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Old 28th April 2012, 02:55 PM   #692
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anyway

from vt52.com
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Old 28th April 2012, 03:50 PM   #693
rongon is offline rongon  United States
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Oh, you didn't have to make that so difficult...

http://vt52.com/diy/tips/platechoke.xls

It was in Tips & Tricks section.
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Old 28th April 2012, 03:59 PM   #694
rongon is offline rongon  United States
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Interesting. It says that for rp = 2k and L = 22H that the -3dB point will be 14Hz. That's not so great, is it.

Why is that so different from the other equation I found?

-3dB down point: X_L = DCR + 2πfL = rp

Is that one wrong? It predicts a -3dB point at only 7Hz.



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I'll go with the worst-case scenario and figure on -3dB at 14 Hz. That's not so great...

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BTW, lots of cool stuff on that site! Thanks.

Last edited by rongon; 28th April 2012 at 04:22 PM.
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Old 28th April 2012, 04:39 PM   #695
rongon is offline rongon  United States
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Using the VT52C.com spreadsheet, the other choke (60Hz 730R) looks much more promising. -3dB at 2 Hz.

So there it is.

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Oh, and my apologies for my grumpiness. It was early in the morning here...
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Old 28th April 2012, 06:12 PM   #696
rongon is offline rongon  United States
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Quote:
Originally Posted by rongon View Post
Using the VT52C.com spreadsheet, the other choke (60Hz 730R) looks much more promising. -3dB at 2 Hz.
Oops. Make that 6Hz. I had the DCR of the choke in the place where the tube's rp is supposed to go. (Duh)

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Old 5th June 2012, 07:50 AM   #697
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Hi Salas,

I can't seem to find your latest schematic online?

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Old 5th June 2012, 07:55 AM   #698
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First post Bas

Staffan
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Old 5th June 2012, 08:03 AM   #699
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That link does not work for me Staffan

It takes me to post #401. But I see no schematic.
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Old 5th June 2012, 08:05 AM   #700
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