Talk:Fleming valve

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DeForest and the Triode[edit]

Why say that DeForest refined his audion into the triode? DeForest never actually understood how his device worked since it relied upon residual gases remaining in the glass tube. Langmuir invented the vacuum triode and fully understood its functioning. Moreover, the audion could not be used for amplification, only for detection. And one more thing: The thermionic effect was first discovered by Guthrie, not Edison. Why not give credit where it is due? Epaulard (talk) 05:42, 21 January 2010 (UTC)[reply]

Just to set the record straight: the Audion could amplify (although it only had a gain of about 5) and is considered the first amplifying tube and the first triode, as stated in numerous WP:RSs 1, 2, 3, 4 --Chetvorno^TALK 20:56, 13 October 2013 (UTC)[reply]

Fleming's vs Hewittic rectification?[edit]

I would like the article to explain the difference between Fleming diode and Hewitt rectifier. Both make DC from AC by allowing current flow in just one direction and both can be built inside of a glass bulb enclosure but one holds vacuum and the other, mercury vapor. Apparently there are very different physical processes taking place in them? 94.21.121.96 (talk) 09:41, 16 November 2022 (UTC)[reply]

I added a See also for Mercury rectifier. We could have a small explanation here, but mostly the explanation there should be where people look. Gah4 (talk) 22:32, 16 November 2022 (UTC)[reply]

Wall power?[edit]

Might not ‘mains electric power’ be a better description? How can a wall power an electrical device? And in the earliest times, the electrical power for appliances was often sourced from an overhead electrical light fitting. 220.240.82.127 (talk) 07:33, 18 February 2023 (UTC)[reply]

Agree, mains power is a much more widely used term. Go ahead, WP:BE BOLD and make the change. Cheers! --Chetvorno^TALK 11:03, 18 February 2023 (UTC)[reply]

Mains power is not usual in the US, though it might be that people figure it out. I suspect wall power would make sense to many in the US, though AC power might be more usual. Gah4 (talk) 13:52, 20 February 2023 (UTC)[reply]

Mains electricity is a very British English term. Probably better to use MOS:COMMONALITY re:"Electrical outlets" or similar wording. Fountains of Bryn Mawr (talk) 14:50, 20 February 2023 (UTC)[reply]

I have gotten used to Mains electricity, though still find it strange. Better than Hydro in Canada. As well as I know it, in the early days (longer ago than I know), some places had 110 VDC power, and some devices are labelled AC/DC to match. More recently, appliances labeled DC mean 12V car power, and AC means, at least in some places, wall power. Gah4 (talk) 23:14, 20 February 2023 (UTC)[reply]

Did a reword since "wall power by transformers" was kind of hard to understand. Fountains of Bryn Mawr (talk) 01:08, 21 February 2023 (UTC)[reply]

Many of the early wall power radio receivers didn't use transformers. There is a series of vacuum tubes with appropriate filament voltage and current to connect in series on a 115V line, AC or DC. (See AC/DC receiver design.) I suspect that only works after indirect heated cathode, though. On DC power, the plug has to go the right way, too. Gah4 (talk) 05:33, 22 February 2023 (UTC)[reply]