Radio Antica e Radio d'epoca
D1_Mazda_GB
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Stato:
Gran Bretagna (Regno Unito)
|
|
| Identico a |
D1_Mazda_GB
|
| Valvole
simili |
Sostituita normalmente - piccola diff.:
2B36
; QF196
Different maximum ratings:
CV1078
; VR78
Heater and shape different:
EA50
|
| Prime serie |
1937
?
-- Collector info (Sammler)
|
| Zoccolo |
3 pin wires in line (1937, B3G)
Wires only.
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| Utilizzata per |
Radio/TV-reception etc. |
| Filamento |
Vf 4 Volt / If 0.2 Ampere / Indirect / Specified current AC/DC ~ = (Series working) |
| Descrizione |
The Mazda D1 was the world's first miniature valve with an indirectly heated cathode. It was the basis for the EA50. Originally designed for TV use, the D1 was used in parallel as the switches in the duplexing system of Type 79B, and subsequently Type 281 radars. The Mazda D1 was also used in receivers at up to 100MHz.
Testo in altre lingue
(può variare)
|
Dimensioni
(LxAxP)
incl.pins/tip |
x 46 x 11 mm / x 1.81 x 0.43 inch |
| Peso |
10 g / 0.35 oz |
| Bibliografia |
- - Manufacturers Literature Ediswan Mazda Valves 1949-1950 catalog
Universal Vade-Mecum, Electron Valves and Semiconductor Devices Section 69, p. 94
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D1_Mazda_GB: U.G.
Urs Gloor
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Just Qvigstad
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D1_Mazda_GB: Original data sheet
Otto Galli
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utilizzano questa valvola:14
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