Tube-number record
IM 1
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IM 1 is a tube type in the TubeDatabase archive (class: Ionization Manometer Tube). Recorded specifications: brand Telefunken, construction Triode, and maximum plate voltage -10 V. The archive does not yet hold a photographed example of this type.
BrandTelefunken
ClassIonization Manometer Tube
Construction
Primary TypeTriode
EnvelopeOsram-Glas
SectionsSingle
Filament / Heater
MaterialDirekt geheizt
Absolute Maximum Ratings
Plate Voltage-10 V
Grid 1 Voltage200 V
Cathode Current8 mA
Audio Performance
Key Features
- Direkt geheizt
- Messen hoher Vakua
- Geniügend weiter Anschlußstutzen
- Reiner Sättigungsstrombetrieb
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Ionisationsmanometer | -10 V | — | — | — | 1 mA |
Application Notes
The tube must be degassed (baked out) before operation. Recommended bake-out at 410°C for at least one hour. Electrodes can be degassed via HF or electron bombardment (300-500V). Maximum electron current during degassing must not exceed 15mA.
Datasheets
Datasheet: IM1.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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