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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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14th Aug 2016, 10:51 pm
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#1 |
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Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,536
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Itt b54
Anyone know what this is? It looks like some sort of vacuum/gasfilled thermocouple device. 4 leads, glass tubular bulb about 3/8" diameter and 1-1/4" long.
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14th Aug 2016, 11:32 pm
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#2 |
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Nonode
Join Date: Jan 2010
Location: Edinburgh, UK.
Posts: 2,008
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Re: Itt b54
My telepathic skills are not too good tonight so a picture would help.
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14th Aug 2016, 11:59 pm
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#3 |
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Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,536
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Re: Itt b54
Any help with the telepathic skills?
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....__________ ....|____||__|__\_____ .=.| _---\__|__|_---_|. .........O..Chris....O |
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15th Aug 2016, 9:39 am
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#4 |
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Dekatron
Join Date: Jan 2005
Location: Oxford, UK.
Posts: 17,864
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Re: Itt b54
It almost looks a bit like the device that was used as part of the regulator in 700-series GPO telephones, except these had 3 leads: http://www.britishtelephones.com/gpo/t706/fig_15.jpg
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15th Aug 2016, 9:55 am
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#5 |
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Dekatron
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 13,454
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Re: Itt b54
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15th Aug 2016, 10:14 am
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#6 |
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Dekatron
Join Date: Jan 2005
Location: Oxford, UK.
Posts: 17,864
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Re: Itt b54
Fascinating, thanks Lawrence.
Presumably good for measuring odd waveforms too, e.g. CRT heater supplies? |
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15th Aug 2016, 12:05 pm
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#7 |
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Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,536
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Re: Itt b54
That looks very promising.
Some data would be nice, but I suspect that might be hard to source. I'll have a gentle play with one and see what I can measure.
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....__________ ....|____||__|__\_____ .=.| _---\__|__|_---_|. .........O..Chris....O |
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15th Aug 2016, 12:11 pm
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#8 |
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Dekatron
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 13,454
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Re: Itt b54
I've searched the web for data but nothing yet.
Lawrence. |
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15th Aug 2016, 12:15 pm
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#9 |
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Dekatron
Join Date: Apr 2012
Location: Worksop, Nottinghamshire, UK.
Posts: 5,554
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Re: Itt b54
It looks like you have to put it in a jig and make up your own data sheet.
Then you can make yourself a real true RMS meter perhaps with the jig still in the electronics for future calibration. |
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15th Aug 2016, 12:49 pm
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#10 |
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Nonode
Join Date: Jan 2010
Location: Edinburgh, UK.
Posts: 2,008
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Re: Itt b54
The HP 415E SWR meter has switched inputs for a bolometer. The two settings are for 4.5 and 8.7MA? Yes capital M. I do not have the manual to hand but it might give you some idea of how to use one.
Al
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