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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: 931 to 960 from 1295
1 .. 10 .. 20 .. 27 28 29 30 31 32 33 34 35 36 37 .. 40 .. 44
 
Sort order:  [ Name | Maker | Year | Type | Country ]

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
EZ4 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
EZ2 1936
Philips; Eindhoven (tubes in... NL
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
EYY13
Funkwerk Erfurt, VEB, RFT (O... D
click to access the tube page
EY91
Common type Europe tube/semi... EU
click to access the tube page
EY82
Common type Europe tube/semi... EU
click to access the tube page
EY51 1948
Philips; Eindhoven (tubes in... NL
click to access the tube page
EW60 1947
Philips; Eindhoven (tubes in... NL
click to access the tube page
EW12
Osram GmbH KG; Berlin D
click to access the tube page
EU-I
click to access the tube page
ER21A
Elesta AG, Bad Ragaz CH
click to access the tube page
EQ80 1950
Common type Europe tube/semi... EU
click to access the tube page
EMM803 1964
Lorenz; Berlin, Zuffenhausen... D
click to access the tube page
EMM801 1957
Telefunken Deutschland (TFK)... D
click to access the tube page
EM800 1967
Common type Europe tube/semi... EU
click to access the tube page
EM87 1961
Common type Europe tube/semi... EU
click to access the tube page
EM85 1952
Common type Europe tube/semi... EU
click to access the tube page
EM84 1957
Common type Europe tube/semi... EU
click to access the tube page
EM83
Röhrenwerk "Anna Seghers" Ne... D
click to access the tube page
EM81
Common type Europe tube/semi... EU
click to access the tube page
EM80 1953
Common type Europe tube/semi... EU
click to access the tube page
EM71 1949
Lorenz; Berlin, Zuffenhausen... D
click to access the tube page
EM34 1946
Common type Europe tube/semi... EU
click to access the tube page
EM11 1939
Telefunken Deutschland (TFK)... D
click to access the tube page
EM5 1950
Telefunken Deutschland (TFK)... D
click to access the tube page
EM4 1939
Common type Europe tube/semi... EU
click to access the tube page
EM1 1936
Common type Europe tube/semi... EU
click to access the tube page
ELL80 1960
Common type Europe tube/semi... EU
click to access the tube page
ELL1 1938
Common type Europe tube/semi... EU
Result: 931 to 960 from 1295
1 .. 10 .. 20 .. 27 28 29 30 31 32 33 34 35 36 37 .. 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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