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Old 11th Oct 2018, 11:13 pm   #1
trobbins
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Default Mullard Technical Communications - Nov 1962

A request please for anyone with Nov 1962 ed of Mullard Technical Communications.

Jon Evans scanned and loaded two articles on microphonics:
https://www.thevalvepage.com/valvete...ph/microph.htm

However, the first part only has pages 1-10, and is missing the last page(s) of the article in Nov 1962.

Appreciate a scan of the missing page(s). Ta, Tim
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Old 12th Oct 2018, 7:27 am   #2
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Default Re: Mullard Technical Communications - Nov 1962

Nobody has noticed for many years! I have it here - page 11 has four additional graphs. I'll scan it for you on saturday.

TTFN,
Jon
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Old 12th Oct 2018, 11:04 am   #3
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Default Re: Mullard Technical Communications - Nov 1962


Ta Jon

PS. that's what happens when you read an article all the way through!
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Old 12th Oct 2018, 12:44 pm   #4
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Default Re: Mullard Technical Communications - Nov 1962

“Sinter-Electrode Capacitance”, could Someone explain what this is please?
Cheers
John
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Old 12th Oct 2018, 1:15 pm   #5
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Default Re: Mullard Technical Communications - Nov 1962

Almost certainly an OCR-snafu of 'inter-electrode capacitance'.
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Old 12th Oct 2018, 7:14 pm   #6
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Default Re: Mullard Technical Communications - Nov 1962

Don’t understand your reply! I didn’t think it was military slang, but thanks anyway.
Cheers
John
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Old 12th Oct 2018, 7:19 pm   #7
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Default Re: Mullard Technical Communications - Nov 1962

Optical Character Recognition - algorithms for extracting machine compatible ASCII text from images like jpeg scans or photos.

Snafu Situation Normal, All F'd Up. this one has military roots.

David
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Old 12th Oct 2018, 7:32 pm   #8
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Default Re: Mullard Technical Communications - Nov 1962

I asked the question after reading the Mullard Publication about Microphony in Valve construction post #1.
Cheers
John
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Old 13th Oct 2018, 7:31 pm   #9
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Default Re: Mullard Technical Communications - Nov 1962

Heres the missing page. The original PDF dates from an era of limited storage and dial-up, so when I get a moment I'll create a better PDF.

Regards,
Jon
Attached Files
File Type: zip p11.png.zip (118.3 KB, 80 views)
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Old 13th Oct 2018, 10:57 pm   #10
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Default Re: Mullard Technical Communications - Nov 1962

Super.

It's certainly a veritable minefield of resonances wherever you look in a valve. I doubt any modern manufacturers would have the resources to prepare cutaway valves, put them on a calibrated shaker assembly and set up an optics rig. But maybe dsp comes to the aid with waterfall plots etc.
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Old 14th Oct 2018, 2:36 pm   #11
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Default Re: Mullard Technical Communications - Nov 1962

Quote:
Originally Posted by Duke_Nukem View Post
Heres the missing page. The original PDF dates from an era of limited storage and dial-up, so when I get a moment I'll create a better PDF.
Thanks for this. I hadn't realised there was another page
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Old 14th Oct 2018, 4:32 pm   #12
Robert Gribnau
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Default Re: Mullard Technical Communications - Nov 1962

A link to the (not identical) article as published in Philips' Technical Review:

http://www.extra.research.philips.co...960_61-071.pdf

Greetings,
Robert
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Old 15th Oct 2018, 6:42 pm   #13
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Default Re: Mullard Technical Communications - Nov 1962

Makes Interesting reading, thanks.
Cheers
John
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Old 15th Oct 2018, 11:41 pm   #14
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Default Re: Mullard Technical Communications - Nov 1962

Robert, that is a great resource - I didn't know it had been there since 2014 - and with a nice index:
http://www.extra.research.philips.co...und%20Archive/
Lots of great articles, something for everyone!
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