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Jacob Roschy, Germany - Tube collection

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ID = 175
Photo Jacob Roschy

Below you find a part of the tube collection Jacob Roschy.

Röhren
Result: 361 to 390 from 1295
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Excerpt from the tube collection of Jacob Roschy. These images (tube photos) were uploaded to the respective tubes or valves by Jacob Roschy.

click to access the tube page
EYY13
Funkwerk Erfurt, VEB, RFT (O... D
EZ1 mit Kupferkatode. Man versprach sich von Kupferkatoden bessere Wärmeleitfähigkeit und geringere Wärmeabstrahlung. Allerdings verdampft Kupfer bei der normalen Betriebstemperatur der Katode von 800 °C schon stark und schlägt sich auf Isolatoren und Innenwand des Kolbens nieder, was man an dem grünlichen Belag auf dem Kolben deutlich erkennen kann. Daher verschwanden Röhren mit Kupferkatode sehr schnell wieder vom Markt. #### EZ1 with copper cathode. Better thermal conductivity and lower heat radiation was expected by the use of copper cathodes. However, copper evaporates strongly at the usual cathode operating temperatures of 800 ° C and deposits on the insulators and the inner surface of the bulb, which can clearly be seen in the greenish discolour, so tubes with copper cathode disappeared very quickly from the market.
EZ1 1934
Common type Europe tube/semi... EU
click to access the tube page
EZ2 1936
Philips; Eindhoven (tubes in... NL
click to access the tube page
EZ3 1936
Philips; Eindhoven (tubes in... NL
click to access the tube page
EZ4 1936
Philips; Eindhoven (tubes in... NL
click to access the tube page
EZ11 1938
Common type Europe tube/semi... EU
click to access the tube page
EZ40 1948
Common type Europe tube/semi... EU
click to access the tube page
EZ40A 1951
Common type France tube/semi... F
click to access the tube page
EZ41 1948
Common type Europe tube/semi... EU
click to access the tube page
EZ80 1952
Common type Europe tube/semi... EU
click to access the tube page
EZ81
Common type Worldwide tube/s... ZZ
Mit 6X4- Aufbau für 70 mA
EZ90 1951
Common type Europe tube/semi... EU
click to access the tube page
EZ91
click to access the tube page
EZ113
Telefunken Deutschland (TFK)... D
click to access the tube page
F2,5M31A
Werk für Fernmeldewesen (OSW... D
click to access the tube page
F2,5M51A
Werk für Fernmeldewesen (OSW... D
click to access the tube page
F9057
CSF, Compagnie Générale de T... F
click to access the tube page
FDD20
Philips Italy; Milano (MI) I
click to access the tube page
FHZ55/340
Frieseke & Höpfner, Babelsbe... D
click to access the tube page
FZ1 1934
Common type Europe tube/semi... EU
click to access the tube page
G2S9
Standard Radiofabrik A.B.; U... S
click to access the tube page
G10/1i
AEG (Radios) Allg.Elektricit... D
click to access the tube page
G132
AEG (Radios) Allg.Elektricit... D
click to access the tube page
G354
Common type Europe tube/semi... EU
click to access the tube page
G400/1K
Standard Telephones and Cabl... GB
click to access the tube page
G1064
Common type Europe tube/semi... EU
click to access the tube page
G1404 1936
Valvo GmbH, Radioröhrenfabri... D
click to access the tube page
Glimmrelais-Pressler
Deutsche Glimmlampen GmbH, (... D
click to access the tube page
GN4
Common type Europe tube/semi... EU
click to access the tube page
GN6
Lorenz; Berlin, Zuffenhausen... D
Result: 361 to 390 from 1295
1 .. 8 9 10 11 12 13 14 15 16 17 18 .. 20 .. 30 .. 40 .. 44
 

Tube collector page of valve collector Jacob Roschy as «own HP at RMorg»
As a member of Radiomuseum.org Jacob Roschy displays items in his/her tube collection. Tubes are called valves in British oriented countries.
Valve and tube collectors as well as radio collectors are invited to join Radiomuseum.org. Every member can display separate collections of tubes, radios etc.

Jacob Roschy started his/her tube collection (valve collection) here on 26.Oct.2004. [index-en]

  
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