Tube-number record
R12
0 archive entries
R12 is a tube type in the TubeDatabase archive (class: High Voltage Rectifier). Recorded specifications: brand Brimar, construction Rectifier, base None (Wire-ended), socket Subminiature, and maximum plate voltage 17000 V. The archive does not yet hold a photographed example of this type.
BrandBrimar
ClassHigh Voltage Rectifier
BaseSubminiature
Filament6.3 V @ 90 mA
Construction
Primary TypeRectifier
Rectifier TypeHalf-wave
EnvelopeGlass
Base MaterialNone (Wire-ended)
SectionsSingle
Filament / Heater
Heater Notes+/- 10 per cent
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Sinusoidal Input | 17000 V | — | 100000 | — | 0.5 mA |
| Pulse Input | 17000 V | — | 100000 | — | 0.1 mA |
Application Notes
Designed for use in the E.H.T. supply of television receivers. Low heater consumption permits operation from line fly-back pulses whilst the absence of base enables the valve to be wired in close proximity to the line output transformer.
Datasheets
Datasheet: R12.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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