Daily Wireless and ElectronicsMeanwhile 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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