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E1232

Informazioni - Aiuto 
ID = 17139
       
Stato:
Gran Bretagna (Regno Unito)
Produttore: MO Valve Co. Ltd.; GB
Progettista: MO Valve Co. Ltd.; GB 
Tipo:  Triodo trasmittente, raffr. ad aria   Testo 
Identico a E1232 = 4C27 = NT99
Valvole simili
Sostituita normalmente - piccola diff.:
  CV199
Other class quality (otherwise equal):
  CV92
Evoluzioni NT99   CV1256  

Zoccolo Wires Sidecontact and top contact.
Utilizzata per Radar
Filamento Vf 6 Volt / If 6.5 Ampere / Half indirect / Specified voltage AC/DC
Descrizione

Given the MOV company's experimental type number E1232, this tube was one of the first "micropup" using oxide-coated unipotential cathode. It was a pulsed triode and was designed by the GEC-MOV Hirst Research Center at Hammersmith, near Wembley, outside of London. According to Sir Paterson, its design had already started with considerable difficulties in May 1940. Certainly it was influenced by the parallel work of E.C.S- Megaw on the use of oxide-coated cathode in his E1189 magnetron, to drametically increase emission. Volume production started from September 1940.

It was made in large quantities by GEC-MOV and also in other countries, including the Canadian Rogers for REL and the National Union Tube Corp in the US. Given the British Navy designation NT99, it was mainly used in airborne radar. It was used in the AMES11 600 MHz mobile ground radar by the RAF and in the naval fire control radar type 284 at the same frequency. It was also used in the A1 radar, operating at 200 MHz. While it was a small tube, it could operate at around 50 kw.

 
Dimensioni
(LxAxP)
incl.pins/tip
x 133 x 52 mm / x 5.24 x 2.05 inch
Peso 197 g / 6.95 oz
Bibliografia Taschenbuch zum Röhren-Codex 1948/49   
The Saga of Marconi Osram Valve   Pages 260 & 265

mpup_16.png E1232: Manufacturer's Literature
Emilio Ciardiello

cv1256nt99_1_2.png
E1232: Manufacturer's Literature
Emilio Ciardiello

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