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Vintage Audio (record players, hi-fi etc) Amplifiers, speakers, gramophones and other audio equipment. |
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26th May 2020, 2:07 pm | #1 |
Tetrode
Join Date: Mar 2018
Location: Plymouth, Devonshire, UK.
Posts: 56
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Battery eliminator solution please.
hi all.
Not posted here for ages, but I now have a problem. I've bought a Vidor battery operated gramophone. However the battery is not available anymore, it was powered by a 1.5 + 90 volt battery. A B125 I believe. Is there any workaround for this, Is there some sort of transformer or inverter that I could run it off say a 12 or 24 volt battery? |
26th May 2020, 2:12 pm | #2 |
Moderator
Join Date: Jan 2003
Location: Ipswich, Suffolk, IP4, UK.
Posts: 21,288
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Re: Battery eliminator solution please.
Does the battery power the motor or is it spring driven?
If the latter this might provide a solution:- http://www.vintage-radio.com/project...y-set-psu.html We'd need to know what valves are fitted though to calculate current consumption. Or you could use D cells for the LT and ten PP3's in series for the HT.
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Graham. Forum Moderator Reach for your meter before you reach for your soldering iron. |
26th May 2020, 3:48 pm | #3 |
Tetrode
Join Date: Mar 2018
Location: Plymouth, Devonshire, UK.
Posts: 56
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Re: Battery eliminator solution please.
Sorry forgot to say its a spring driven motor. I'll have a look at it and see what type valves it has and post.
Found this on ebay, https://www.ebay.co.uk/itm/DC-DC-150...e/283533976976 |
26th May 2020, 5:51 pm | #4 |
Dekatron
Join Date: Jun 2015
Location: Biggin Hill, London, UK.
Posts: 5,208
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Re: Battery eliminator solution please.
There seems to be the Vidor number for the battery in the advert you posted, but I can't really read it. Could you tell us what it is since while the battery will no longer be available somebody might know what it is and can work out how much current it would be likely to provide,etc.
I think it's very unlikely that a motor would be run off the 90V (HT) part of the battery. If it is an electric motor it'll run off the 1.5V part. Do you have the player? If so, what valves are it? The numbers will probably all start with 'D'. |
26th May 2020, 5:57 pm | #5 |
Dekatron
Join Date: Feb 2003
Location: Cottingham, East Yorkshire, UK.
Posts: 5,761
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Re: Battery eliminator solution please.
It's a Vidor 'CN374' (data not listed on Paul's CD-ROM).
From this link it will be seen that the motor is hand cranked - not electric: https://www.snellingsmuseum.co.uk/ar...-record-player From this link, it states that the valve line-up is 1 x DF91 and 2 x DL92: https://www.radiomuseum.org/r/vidor_...ramophone.html DF91 filament current is only 0.05A, DL92, 0.1A. Either of Graham's suggestions would therefore be fine. Unless you intend to use it regularly, it's hardly worth the bother of a battery eliminator, but that's a personal choice. Have fun with it.
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David. BVWS Member. G-QRP Club member 1339. |
27th May 2020, 7:46 am | #6 |
Octode
Join Date: Dec 2018
Location: Llandeilo, West Wales, UK.
Posts: 1,092
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Re: Battery eliminator solution please.
Does it have to be a 12 or 24 volt battery supply?
If mains is acceptable look online for '90 volt battery eliminator' like this https://www.vintage-radio.net/forum/...d.php?p=897482. One on ebay item no. 174282695273 and elsewhere.
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Never Leave Well Enough Alone... |
27th May 2020, 8:06 pm | #7 |
Dekatron
Join Date: Jan 2004
Location: Newcastle upon Tyne, Tyne & Wear, UK.
Posts: 8,194
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Re: Battery eliminator solution please.
Hi Burnt Wire, if you are confident to build a simple circuit, PM me you email address and I'll send you a scan or a suitable mains operated battery eliminator
Ed |