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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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29th Apr 2013, 1:10 pm | #1 |
Dekatron
Join Date: Jul 2007
Location: Penrith, Cumbria, UK.
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Fifteen Plus One-and-a-Half
Found these in our old Marconi absorption wavemeter down in the crypt. 15V HT supply and 1.5V filament on the valve. Two of the 800s measured 2V on an AVO 8!
This pic might be of interest to someone.
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Regds, Russell W. B. G4YLI. |
29th Apr 2013, 6:03 pm | #2 |
Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
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Re: Fifteen Plus One-and-a-Half
So would some scans of the developed battery cases! Both sorts are pretty rare now.
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29th Apr 2013, 6:18 pm | #3 |
Dekatron
Join Date: Jan 2005
Location: Oxford, UK.
Posts: 17,863
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Re: Fifteen Plus One-and-a-Half
The 800s were, of course, for bicycle lamps; the metal Ever Ready ones that were certainly still available new in the very early 1980s, before they were replaced by the grey plastic ones that took two HP2s (and the French ones that took a 4.5V flat battery).
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29th Apr 2013, 7:03 pm | #4 |
Dekatron
Join Date: Feb 2007
Location: Lynton, N. Devon, UK.
Posts: 7,088
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Re: Fifteen Plus One-and-a-Half
Is the square one an R1662?
I have one of these (dead of course), and I'm wondering what the intended market was. |
29th Apr 2013, 7:35 pm | #5 | |
Retired Dormant Member
Join Date: Apr 2011
Location: Wolverhampton, West Midlands, UK.
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Re: Fifteen Plus One-and-a-Half
Quote:
Paul. Last edited by Paul Adams; 29th Apr 2013 at 7:47 pm. Reason: Correction of description |
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29th Apr 2013, 8:59 pm | #6 |
Dekatron
Join Date: Jul 2007
Location: Penrith, Cumbria, UK.
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Re: Fifteen Plus One-and-a-Half
The 1.5V cell is an 'S' type and is bigger than the AVO version, and can be scaled against the more familiar bicycle lamp batteries. I suppose I ought to dismantle it and scan it with dimensions, as suggested. I'll put them in my locker until I get around to it.
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Regds, Russell W. B. G4YLI. |
29th Apr 2013, 9:02 pm | #7 |
Dekatron
Join Date: Jul 2007
Location: Penrith, Cumbria, UK.
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Re: Fifteen Plus One-and-a-Half
[QUOTE=Paul Adams;604710]Field telephones type 'D', 'F' and 'J', as well as Avometers.
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Regds, Russell W. B. G4YLI. |