Alternative Name(s): Electronic Rectifying Vacuum Tube; Thermionic Electron Valve

A Tungar Bulb, manufactured by General Electric. U. S. A., introduced 1917 and used mainly during 1920s and still in use in the 1950s.

It was a gas rectifier used in battery chargers.

This valve is believed to have previously been used or collected by Francis West Chambers (1861-1928), who from 1909 held the position of electrical inspector for the Public Works Department of Victoria, with responsibility for supervising municipal power supply undertakings, and later held a similar role with the State Electricity Commission of Victoria from 1921. During the early 1900s he had collaborated with Henry Walter Jenvey in the first experimental wireless telegraphy experiments in Australia.

Physical Description

Globe. It has an Edison light globe screw base.

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