Tube-number record
4B32
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4B32 is a tube type in the TubeDatabase archive (class: Half-Wave Gas-Filled Rectifier). Recorded specifications: brand Standard Telephones and Cables Limited, construction Rectifier, socket CRT / special base, and maximum plate voltage 10000 V. The archive does not yet hold a photographed example of this type.
BrandStandard Telephones and Cables Limited
ClassHalf-Wave Gas-Filled Rectifier
BaseCRT / special base
Construction
Primary TypeRectifier
Rectifier TypeHalf-wave
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialOxide-coated
Warm-up Time30s
Absolute Maximum Ratings
Plate Voltage10000 V
Cathode Current1250 mA
Audio Performance
Key Features
- Xenon-filled
- Half-wave rectification
- Unrestricted mounting position
- No heaters, fans or thermostats required for bulb temperature control
- Mobile application suited
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Single Phase Full Wave (2 valves) | 3180 V | — | — | — | 2500 mA |
| Single Phase Full Wave Bridge (4 valves) | 6360 V | — | — | — | 2500 mA |
| Three Phase Half Wave (3 valves) | 4780 V | — | — | — | 3750 mA |
| Three Phase Double Y Parallel (6 valves) | 4780 V | — | — | — | 7500 mA |
| Three Phase Full Wave (6 valves) | 9570 V | — | — | — | 3750 mA |
Application Notes
The valve is directly heated; it is recommended that the output circuit be taken from the mid-point of the filament supply transformer secondary winding. Values for typical operations are based on sine wave input and the use of a suitable choke input filter.
Datasheets
Datasheet: 4B32.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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