4B32
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BrandStandard Telephones and Cables Limited
ClassHalf-Wave Gas-Filled Rectifier
BaseB4F
Construction
Primary TypeXenon-filled Rectifier
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) | 3180V | - | - | - | 2500mA |
| Single Phase Full Wave Bridge (4 valves) | 6360V | - | - | - | 2500mA |
| Three Phase Half Wave (3 valves) | 4780V | - | - | - | 3750mA |
| Three Phase Double Y Parallel (6 valves) | 4780V | - | - | - | 7500mA |
| Three Phase Full Wave (6 valves) | 9570V | - |
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.
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