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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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24th Sep 2014, 12:46 pm
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#1 |
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Octode
Join Date: Dec 2006
Location: Colchester, Essex, UK.
Posts: 1,076
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L67bg
I need the base details for this valve/ballast. L67BG Any link to data would be handy.
Mike. |
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25th Sep 2014, 11:49 am
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#2 |
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Octode
Join Date: Jul 2008
Location: Gloucestershire, UK.
Posts: 1,043
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Re: L67bg
Hello,
There is this for the L67B but there are other L67s with other suffixes with different connections. www.radiomuseum.org/tubes/tube_l67b.html Yours Richard |
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25th Sep 2014, 1:08 pm
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#3 |
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Octode
Join Date: Dec 2006
Location: Colchester, Essex, UK.
Posts: 1,076
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Re: L67bg
Thanks Richard,
That is the one. I did a search on Radio Museum but came up with zero. I am managing to do without it at the moment, as I am running the heaters via a pair of high wattage wirewound resistors, but will revert to the valve if and when I can find one. This valve seems to be a USA quirk. I don't know if they were ever used over here. I did find out that the number of the valve refers to voltdrop on some of them, after they standardised their ballast tube numbering system, but I don't think that applied to the one above, as the volt drop needed is around 48 volts. The valve in question has a crack in the ceramic material on which the resistance wire is wound and is O/S. Mike. |
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25th Sep 2014, 10:36 pm
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#4 |
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Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,535
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Re: L67bg
O/S?
O/C or U/S perhaps? 
__________________
....__________ ....|____||__|__\_____ .=.| _---\__|__|_---_|. .........O..Chris....O |
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26th Sep 2014, 7:50 am
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#5 |
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Octode
Join Date: Dec 2006
Location: Colchester, Essex, UK.
Posts: 1,076
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Re: L67bg
No Oh S**
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