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Old 10th Jun 2021, 6:41 pm   #376
FERNSEH
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Join Date: Mar 2005
Location: Gateshead, Tyne and Wear, UK.
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Default Re: Baird T5 restoration project.

Peter_Scott wrote: "I think that Merdler and Gilbert were the designers of that part of the scanning circuitry along with Tingley and Pugh. All working for BTL."

Hi Peter,
The attached circuit diagram shows an example of their work. It would seem that the Westector, if that what it is, performs the function of sync separator and the triode valve is the sync amplifier.
More work needs to be done on the timebase unit before it can be tested in the T23.
Note the double frame sync integrator.
It might be possible that the selenium diode doesn't follow the convention red indicates the cathode.

DFWB.
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