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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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#41 |
Moderator
Join Date: Jan 2003
Location: Ipswich, Suffolk, IP4, UK.
Posts: 20,660
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Isn't there an internet archive site somewhere? Perhaps it's there?
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Graham. Forum Moderator Reach for your meter before you reach for your soldering iron. |
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#42 |
Octode
Join Date: Mar 2011
Location: Sheffield, South Yorkshire, UK.
Posts: 1,453
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There is, Graham; it's called The Wayback Machine. Sadly it's a bit hit and miss as to what works with it and what doesn't.
Here's an old-style PP3. I'm not claiming historical accuracy for any of my reproductions as I'm too young to have ever seen originals but they certainly looks more in keeping with vintage equipment than modern ones. |
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#43 |
Moderator
Join Date: Jan 2003
Location: Ipswich, Suffolk, IP4, UK.
Posts: 20,660
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Well done! It's here:-
https://web.archive.org/web/20180729...eriesframe.htm Appears to be incomplete. I haven't checked earlier snapshots.
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Graham. Forum Moderator Reach for your meter before you reach for your soldering iron. |
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#44 |
Dekatron
Join Date: Jun 2013
Location: East Sussex, UK.
Posts: 3,213
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Maybe the site is on the Google archive.
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#45 |
Octode
Join Date: Mar 2011
Location: Sheffield, South Yorkshire, UK.
Posts: 1,453
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The now dead link I gave in Post 9 now seems to be http://www.radionostalgia.ca/lib/Ima...tery/Unsorted/
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#46 | |
Dekatron
Join Date: Feb 2005
Location: West Cumbria (CA13), UK
Posts: 6,054
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Well done for finding it though.
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Mending is better than Ending (cf Brave New World by Aldous Huxley) |
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#47 | |
Dekatron
Join Date: Feb 2005
Location: West Cumbria (CA13), UK
Posts: 6,054
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Mending is better than Ending (cf Brave New World by Aldous Huxley) |
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#48 |
Octode
Join Date: Mar 2011
Location: Sheffield, South Yorkshire, UK.
Posts: 1,453
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Old-style No8 and 1289.
I THINK the No8 is the correct size but don't have a battery to check it against to make certain. |
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#49 |
Octode
Join Date: Mar 2011
Location: Sheffield, South Yorkshire, UK.
Posts: 1,453
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PP4 (later round version).
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#50 |
Dekatron
Join Date: Apr 2005
Location: Bewdley, Worcestershire, UK.
Posts: 4,683
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The PP4 scan is very interesting, thanks for posting it. The problem for anyone trying to replicate such a cell must be to achieve a realistic mAh capacity in a cylindrical shape. PP4s were originally presumably of layer construction using circular rather than rectangular disc cells. Perhaps circular DEAC cells could be used.
Has anyone actually managed successfully to construct a replica PP4? I have a piece of test gear that took three of them.
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Phil “The place where optimism most flourishes is the lunatic asylum” - Henry Havelock Ellis |
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#51 |
Octode
Join Date: Mar 2011
Location: Sheffield, South Yorkshire, UK.
Posts: 1,453
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The Small Battery Company sells new PP4s, but make sure you're sat down before looking at the price.
![]() As for making one I suppose it depends on how much current the host device needs. Three lots of lithium buttons in parallel would be my starting point. Poundland's solar garden lights have tiny 40mAh rechargeable cells so seven of those would give 8.4V. |
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#52 |
Dekatron
Join Date: Apr 2005
Location: Bewdley, Worcestershire, UK.
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Pity, they state the price but conveniently forget to mention the mAh capacity! At the risk of going off topic, I’d guess that three parallel groups of three CR2025s in series would give about 450mAh, more if CR2032s would fit into the available space. Still, the price is perhaps understandable if good quality cells are being fitted. A high price to pay for originality though!
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Phil “The place where optimism most flourishes is the lunatic asylum” - Henry Havelock Ellis |
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#53 |
Dekatron
Join Date: Apr 2012
Location: Worksop, Nottinghamshire, UK.
Posts: 5,536
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I just cut the can off a new PP3 and used the snaps from a PP9 that had been used up in a TR82.
It worked for me. |
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#54 |
Pentode
Join Date: Oct 2018
Location: Coventry, West Midlands, UK.
Posts: 220
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Ever Ready AD28
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#55 |
Octode
Join Date: Mar 2011
Location: Sheffield, South Yorkshire, UK.
Posts: 1,453
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B103. It's in several parts as it's far too big to print on a single sheet of A4 paper.
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#56 |
Heptode
Join Date: Dec 2014
Location: Limerick, Ireland.
Posts: 901
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#57 |
Heptode
Join Date: Dec 2014
Location: Limerick, Ireland.
Posts: 901
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#58 |
Dekatron
Join Date: Jun 2015
Location: Biggin Hill, London, UK.
Posts: 5,066
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For reference I have attached scans of the (unfolded) cardboard casings of the 2 batteries. I assume they are well-know versions and that it is not worth trying to clean up the scans as they are already on the web.
I'll keep the cardboard at least for the moment though. |
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#60 |
Dekatron
Join Date: Jun 2015
Location: Biggin Hill, London, UK.
Posts: 5,066
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That's the same AD35 version as the one I have, but I think my B126 is a newer type. But it's also the one I remember getting many years ago and I am sure somebody has already scanned it (one in rather better condition than mine).
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