Daily Wireless and Electronics"Keep Your H.F. in its Place" 😈 (in 1927)
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Arphone, one of the many brands that ended up in the belly of CGTVE (iirc).
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Blaupunkt exhibit at the IFA in Berlin, September 1927
<- https://oldbytes.space/@daily_tsf/116634628895583049
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Whoops, slipped on a banana peel and slid right through to July 1900 which had this "Ever Ready" flashlight sold by the Paris dependency of the AENMC - five years before they renamed The American Ever Ready Company.
Interesting story this, how the British dependency became independent and then bought the American former parent.
Reminder that the AA dry cell was introduced in 1907 and the AAA in 1911 - they are by far less modern that one would generally think, thinken't they.
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Whoa look what they stole!*
Mazda 1964 tube catalog.
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Is it a lamp?? Is it a spaceheater?? No, it's Superllämp!
We're back in Sept 1925 again, Mr Fersing was bored or his rectifiers didn't sell too well, so he made this lamp. Nice lamp.
I presonally prefer the radio lamps which we will undoubtedly still see here :D
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Meanwhile in France (1928 catalog cover page)
Hewittic S.A. (HSA) was founded in 1924, as a continuation of Hewittic Electric Co Ltd (France), themselves being the successor of Westinghouse Cooper Hewitt Co. They sold "Cooper-Hewitt" rectifiers and Mercury Vapour Lamps early on, later also made other tubes, chargers and radios.
As early as 1928, perhaps earlier, they made the Rectox metal oxide rectifier, a cupoxide solid state rectifier.
Peter Cooper-Hewitt is commonly credited with inventing the mercury vapour lamp in 1901.
Pictured is an octopus a three-phase full-wave mercury-arc valve with 6 anodes, type 350-400 A.
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I'm currently digging into early telephone installations and there were quite different approaches to the challenges that had to be dealt with, depending on pre-existing infrastructure, but also massive differences per country: adoption rate, government involvement, postal regulations, safety questions and all that.
You all know the tower of the Stockholm Telephone Exchange, probably? Yeah, those are A LOT OF PORCELAIN INSULATORS
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Post, Telegraaf en Telefoon or actually, in the Netherlands, Staatsbedrijf der Postereijen, Telegrafie en Telefonie (PTT).
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