Tube-number record
5SP1
0 archive entries
5SP1 is a tube type in the TubeDatabase archive (class: Twin Cathode Ray Tube). Recorded specifications: brand DuMont Laboratories, year 1945, construction Display / CRT, base Medium Shell, socket Diheptal, and maximum plate voltage 4400 V. The archive does not yet hold a photographed example of this type.
BrandDuMont Laboratories
ClassTwin Cathode Ray Tube
BaseDiheptal
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialMedium Shell
Sections2
Filament / Heater
Heater NotesValues per electron gun unit
Absolute Maximum Ratings
Plate Voltage4400 V
Grid 2 Voltage2200 V
H-C Voltage125 V
Audio Performance
Key Features
- Intensifier Type
- Electrostatic Deflection
- Electrostatic Focus
- Independent twin-gun construction
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Condition 1 | 1500 V | — | — | — | — |
| Condition 2 | 3000 V | — | — | — | — |
| Condition 3 | 4000 V | — | — | — | — |
Application Notes
The direction of the trace produced by deflecting electrodes D3 and D4 will not deviate more than +/- 10 degrees from a plane through pin No. 5.
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