639:. The B18T like most AC/DC designs did use an overwind on the line-scan inductor (turning it into what became technically misnamed as a line-output transformer) to produce the high voltage for the tube. It was misnamed because the 'output transformer' was never intended to match the impedance of the scan coils to the line output stage, which is what a true output transformer would do. Indeed the scan coils are usually connected in series with the transformer primary (though a few designs did have some more esoteric arrangements). All projection televisions of the time used a line-scan inductor (i.e. without any secondary windings) and a separate 25-30 kV EHT generator, in early designs directly mains powered but later a self contained oscillator/transformer/rectifier.
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Thanks but no thanks! After millions of lines of code I hate writing anything and I never really had an interest in this article, in the first place, after being involved in repairing the junk for a few years. Got my toe wet with a grammar fix and now I just want to take the hook out of my mouth. :)
502:, the admin that moved the page, to install archives and get rid of the past talks. Most of the chatter is about moving the article, article naming, subject matter that was attempted to be changed repeatedly and all water under the bridge now. Any objections of comments it is on his/her talk page.
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I am not having a problem with the claim that the Pye B18T was the first television to feature an AC/DC type design (because as far as I am aware, it was). My problem is that it is not adequately referenced. I am not happy with the newly supplied
Science Museum reference because it does not
631:. Not only is this not true, it is actually impossible because the scan coils are deliberately designed to have as little inductance as possible (comensurate with their purpose of producing a magnetic field) to allow a rapid fly-back. The reference contradicts itself later on by stating,
577:, I have changed the lede of the article to the most recent version discussed above. This addresses the fact that the article does not discuss receiver design in general, but only where the AC/DC receiver differs from its AC only counterpart. As always, feel free to improve it.
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The valve page also talks about the energy being recovered from the scan coils being used to boost the HT supply. Once again this is incorrect as the energy is recovered from the line-output transformer not the scan coils.
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I modified the auto archive parameter to old=62 days, as this is not a very active page every month. Minthreadsleft=4 is good, it prevents the talk page becoming desolate looking, which is uninviting to new questions.
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