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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: 1171 to 1200 from 1298
1 .. 10 .. 20 .. 30 .. 35 36 37 38 39 40 41 42 43 44
 
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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
KF2 1934
Common type Europe tube/semi... EU
click to access the tube page
KBC1 1934
Common type Europe tube/semi... EU
click to access the tube page
FZ1 1934
Common type Europe tube/semi... EU
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
EL1 1934
Common type Europe tube/semi... EU
click to access the tube page
EK1 1934
Philips; Eindhoven (tubes in... NL
click to access the tube page
EF2 1934
Philips; Eindhoven (tubes in... NL
click to access the tube page
EF1 1934
Philips; Eindhoven (tubes in... NL
click to access the tube page
EB1 1934
Philips; Eindhoven (tubes in... NL
click to access the tube page
CY2 1934
Common type Europe tube/semi... EU
click to access the tube page
CY1 1934
Common type Europe tube/semi... EU
click to access the tube page
CL1 1934
Common type Europe tube/semi... EU
click to access the tube page
CK1 1934
Common type Europe tube/semi... EU
click to access the tube page
CF2 1934
Philips; Eindhoven (tubes in... NL
click to access the tube page
CF1 1934
Philips; Eindhoven (tubes in... NL
click to access the tube page
AK1 1934
Common type Europe tube/semi... EU
click to access the tube page
26NG 1934
Loewe-(Opta); Deutschland D
click to access the tube page
W30 1934
MO Valve Co. Ltd.; GB GB
click to access the tube page
R3 1934
Brimar (STC); Foots Cray GB
click to access the tube page
KL1_5pin 1934
Common type Europe tube/semi... EU
click to access the tube page
KC1_4pin 1934
Common type Europe tube/semi... EU
click to access the tube page
D418 1934
Tungsram; Budapest (see also... H
click to access the tube page
CB1 1934
Common type Europe tube/semi... EU
click to access the tube page
BCH1 1934
Common type Europe tube/semi... EU
click to access the tube page
BB1 1934
Telefunken Deutschland (TFK)... D
click to access the tube page
AH1 1934
Common type Europe tube/semi... EU
click to access the tube page
AF7 1934
Common type Europe tube/semi... EU
click to access the tube page
AF3 1934
Common type Europe tube/semi... EU
click to access the tube page
AC2 1934
Common type Europe tube/semi... EU
click to access the tube page
ABC1 1934
Common type Europe tube/semi... EU
Result: 1171 to 1200 from 1298
1 .. 10 .. 20 .. 30 .. 35 36 37 38 39 40 41 42 43 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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