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MT1_MOV

Information - Aide 
ID = 19708
       
Pays:
Royaume Uni
Fabricant: Marconi-Osram - (Valves/Tubes); GB
Concepteur: Marconi's Wireless Telegraph Co. Ltd. 
Type:  Transmitting Triode, air cooled   Power/Output 
  <1925 très rare
Identique à MT1_MOV = MT1_Ediswan
Similaires
Différent chauffage :
  T250_MO
Première série Mar.1919 ?? British Radio Valves - The Vintage Years: 1904-1925 page 129 (before = Ediswan)
Première source
Mar.1919 : British Radio Valves - The Vintage Years: 1904-1925 p.127

Culot Wires
Utilisé par Transmittertube (Radio)
Chauffage Vf 9 Volt / If 5.5 Ampère / Direct / Specified voltage AC/DC
Description

Ediswan is probably producing until 1919 when production went to Osram. Fin Stewart lists MT1, MT3, MT4 and MT5 being produced by Osram (in "History of GEC and the Marconi Osram Valve", page 77.) First made by Osram lamp Works March 1919, before the MOV agreement was signed - 26/11/1919. Tube shown as made by MOV in the "Exhibit of Wireless Valves at the Exhibition of the Physical Society January 1920", page 12.

Tyne and Thrower assign it to MOV.

Similar to T-250, but for a lower filament voltage. The two tubes were interchangeable with each other, properly adjusting the voltage drop variable resistor used in series to the filament of each tube, as clearly shown in the application diagram below.

By the way, it was common practice to etch the exact voltage value on the glass of each transmitting tube with tungsten filament, individually adjusting the series resistor. (Ref. 'Thermoionic Tubes' by John Scott-Taggart, 1921)

 
Texte dans d'autres langues (peut différer)
Dimensions
(l x h x p)
incl.pins/tip
215 x 120 x mm / 8.46 x 4.72 x inch
Prix 1 Prix (visible pour membres seulement)
Bibliographie Saga of the Vacuum Tube, Tyne   p.381
- - Manufacturers Literature   

ra8_transmitter.png
MT1_MOV: Ali e Onde, Franco Soresini
Emilio Ciardiello

mt1_mov_spec.png
MT1_MOV: Banneitz, TB der drahtl. Teleph. 1927
Anonyme 15 Collectionneur

Utilisé dans modèles 1= 1925 ; 1= 1927?

Modèles de Radiomuseum.org avec ce composant :2
 
gb_marconi_osram_mt1_side_view.jpg

MT1_MOV
 

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