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ID = 21094
Tube type:  Oscilloscope CRT, picture tube   Indication 
Identical to DG7-31 = DG7-131
Similar Tubes
Normally replaceable-slightly different:
  95436 ; DG7-31-01

Base Duodecal (12-pin), B12A (not glass)
Was used by Technology / Measurement
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC

Assymetric deflection

Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
x 172 x 70 mm / x 6.77 x 2.76 inch
Weight 120 g / 4.23 oz
Tube prices 1 Tube prices (visible for members only)

DG7-31: Diefenbach Bastelpraxis III
Heinz Höger

du64_g.gif DG7-31: RTT Schwandt
Günther Stabe † 19.8.20

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Just Qvigstad
DG7-31: Telefunken Taschenbuch 1971
Anonymous 15 Collector

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Usage in Models 1= 1955? ; 1= 1955 ; 1= 1957? ; 1= 1957 ; 2= 1958 ; 1= 1959 ; 2= 1960?? ; 2= 1965 ; 1= 1971??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):12

Collection of



Forum contributions about this tube
Threads: 1 | Posts: 1
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DG7-31 (DG7-31)
Wolfgang Siegmund

Bei dieser Röhre sind nur die Horizontalplatten für asymmetrische Ablenkung ausgelegt.

Die Vertikalplatten müssen symmetrisch angesteuert werden, wie man es auch in der Schaltung sehen kann.  

Die hier gezeichnete innere Verbindung zwischen g2+4 und einer Horizontalplatte existiert nicht und muss extern hergestellt werden.  S. a. Oszillograf Grundig_w2_6023.


End of forum contributions about this tube

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