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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets.

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Old 22nd Sep 2018, 5:07 pm   #1
Kentode
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Default ELF 3 valve Portable.

I've just picked up a copy of Radio Constructor, January 1969.

Inside was this blueprint.

Dated 1936, I don't know if this is an original or a reprint.

I'd like to ask the moderators if this is of interest to anyone before I post the complete schematic.

The complete diagram is 20 inches long
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Old 22nd Sep 2018, 5:48 pm   #2
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Default Re: ELF 3 valve Portable.

Post the whole thing please, a PDF gets round the limitations of "instant" photo posting here. It's all too easy to instant post, a bit of thought gives you larger file sizes, a good move as far as I am concerned.
 
Old 22nd Sep 2018, 6:11 pm   #3
AC/HL
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Default Re: ELF 3 valve Portable.

I'm sure it will be of interest to someone. The blueprints were often lost (as this one was).
Unfortunately, the May issue is missing from our favourite library, but the blueprint appears in the June list: https://www.americanradiohistory.com...1936-06-27.pdf
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Old 23rd Sep 2018, 1:26 pm   #4
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Default Re: ELF 3 valve Portable.

To what does the ELF (Extra Low Frequency??.??) refer? Is it a particularly small set?
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Old 23rd Sep 2018, 4:20 pm   #5
Kentode
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Default Re: ELF 3 valve Portable.

My apologies to merlinmaxwell but I can't convert pictures to PDF. on my phone.

I'm quite prepared to post the original document to anyone who can do this.
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