7217
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BrandMarconi Italiana
ClassMercury Vapour Rectifier
BaseSpecial Metal-Shell Super Jumbo-5 pin with Bayonet
Construction
Primary Typediode
Rectifier Typehalf-wave
EnvelopeGlass
Base MaterialMetal-Shell
Sections1
Filament / Heater
MaterialCoated
Warm-up Time60s
Absolute Maximum Ratings
Plate Voltage20000 V
Cathode Current1750 mA
Audio Performance
Key Features
- Half-wave mercury vapour diode
- High voltage rectifier
- Peak inverse voltages up to 20000V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Half-Wave Rectifier | 14200V | - | - | - | 1750mA |
Application Notes
The 7217 is a half-wave mercury vapour diode, suitable for use as a high voltage rectifier for peak inverse voltages up to 20000 volts.
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