Tube-number record
A214
0 archive entries
BrandMarconi's Wireless Telegraph Company Limited
ClassRectifier
Construction
Primary TypeRectifier
Rectifier TypeHalf wave / Full wave bridge
EnvelopeGlass
Base MaterialMetal/Plastic with 2 Pins
Sections1
Filament / Heater
MaterialTungsten
Absolute Maximum Ratings
Plate Voltage125000 V
Cathode Current500 mA
Audio Performance
Key Features
- Oil-insulated
- Designed for X-ray apparatus
- Manual or Automatic filament switching ratings
- High peak inverse voltage
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Continuous duty | — | — | — | — | 50 mA |
| Intermittent duty - Manual filament switching | — | — | — | — | 300 mA |
| Intermittent duty - Automatic filament boost | — | — | — | — |
Application Notes
The A214 is designed for use in X-ray apparatus and must be operated while oil-insulated. The oil must have a dielectric strength of at least 25,000 volts per 0.1 inch and be free of dirt and moisture. Ratings apply to full-wave bridge circuits; for half-wave circuits, current values must be halved.
Datasheets
Datasheet: A214.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
0 results