Tube-number record
M38-120W
0 archive entries
M38-120W is a tube type in the TubeDatabase archive (class: Monitor Tube). Recorded specifications: construction Display / CRT, socket CRT base (B7 family), and maximum plate voltage 18000 V. The archive does not yet hold a photographed example of this type.
ClassMonitor Tube
BaseCRT base (B7 family)
Filament6.3 V @ 300 mA
Construction
Primary TypeDisplay / CRT
EnvelopeRectangular television tube
Sections1
Filament / Heater
Heater NotesIndirect by a.c. or d.c.; parallel or series supply
Absolute Maximum Ratings
Plate Voltage18000 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operating Conditions | 16000 V | — | — | — | — |
Application Notes
The M38-120W is a 38 cm-diagonal rectangular television tube primarily intended for use as a monitor tube. X-ray shielding is advisable if operated above 16 kV. Protective circuits using spark gaps are recommended to prevent damage from internal flash-overs.
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