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Contents of the magazine
Sommaire général
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Contents du Bulletin de l'AEA série normale 102
<< Previous October-December 2000 Next >>
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Ivory sheets :
Grammoont 815

Technical pages :
Le mystère des impédances by Marius Joly.
A short analysis of the reciprocal actions between the different elements governing impedances.
Aide-mémoire : le courant alternatif by J.-C. Montagné.

History of men :
Il voyait loin by P. Demerseman.
The story of P.T. Farnsworth is briefly reviewed. At age 15, he invented electronic TV when he was young farmer in Rigby (ID). Suported by his college chemistry teacher, he obstinately developed his invention and filed his first patent at 21, in 1927, that was to be followed by 110 more. His Image Dissector, the very first electronic image analyser, used during the 1936 Olympic Games was finally supplanted by the more sensitive Iconoscope developed by Zworykin in the late 1930s.

History of techniques :
Correction BF du Desmet by A. Cayrol.
A compréhensive study of the low frequencies correction circuit utilized in a late 1940s Desmet radio receiver which produces a high standard sound. The possible failures of the circuit are also reviewed.
L'inventeur de la télécommande est reconnaissant à Marconi by J.-C. Montagné.
An article which aeared in a 1920 Italian newspaer is abstracted. In this paper the self-styled inventor of remote control seems to be only indebted to Marconi. The abstractor adds some comments.

Atelier :
Comment refaire un peinture craquelée ? by D. Falgoux.
How to remake a cracked painting ? Many radio sets constructors have used (particulary on the metal surfaces) coatings with special effects, among whom the so called cracked ones.
Étamage des fils divisés de bobinages by J.-C. Montagné.
Here is explained a very convenient method to remote enamel and then tining divided wires.
Le décapage des pièces de bronze by Michel Vaudelin.
A process is described for bronze pieces to give a look of a new part to one which has been oxydised.
Restauration d'un Grammont 815 (1938) by J.-C. Montagné.
Restoration of both cabinet and electronic circuit of a 1938 Grammont 815.

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