Museum trails

Polytechnic Roads

1

MagnETI MaREllI TElEVISIOn CaMERa

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1938

Between 1938 and 1939, under the direction of Vecchiacchi, the Magneti Marelli laboratories at Sesto San Giovanni built this television camera for the first italian broadcasting experiments, making use of patents of and collaboration by RCA and Vladimir Zworykin. The scene shot is projected on the electronic tube, which converts the light signal into an electrical signal. After being suitably processed, this is broadcast via radio. The scene can only be shot live.


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2

TElEVISIOn SHOOTIng TUBE, CallEd THE “ICOnOSCOPE”

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1930s

This device, developed by Vladimir Zworykin and patented in 1934, was utilized by Vecchiacchi in the Magneti Marelli laboratories for realization of the Milanese company’s first television camera in 1939. The shooting tube is made up of a glass ampoule under vacuum, which contains the hot-filament electronic “cannon” and a screen made from a “mosaic” of photosensitive cells.


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3

MagnETI MaREllI TElEVISIOn SET

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1938

The technology for electronic television developed in italy beginning in the mid-1930s at the hands of three large companies: Magneti Marelli (RCA system), Allocchio Bacchini (Telefunken system), and Safar (Telefunken derivative system). This model, the RV 300, was built in 1938 by Magneti Marelli on Francesco Vecchiacchi’s design, in collaboration with RCA. The cathode ray tube is oriented vertically and the images are reflected by a mirror.


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