Tube-number record
1DH
0 archive entries
1DH is a tube type in the TubeDatabase archive (class: Cathode Ray Tube). Recorded specifications: brand Philips and construction Display / CRT. The archive does not yet hold a photographed example of this type.
BrandPhilips
ClassCathode Ray Tube
Filament6.3 V @ — mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Grid 2 Voltage500 V
Audio Performance
Key Features
- High brightness
- Specific screen radius requirements
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Test Conditions | — | — | — | — | 0.01 mA |
Application Notes
Comparison with E.T.L. tubes indicates better center line width but worse edge astigmatism. Raster distortion (barrel) is higher than E.T.L. types.
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