Tube-number record
HL.133
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BrandMazda
ClassA.C./D.C. Mains Triode
BaseOctal
Filament13 V @ 200 mA
Construction
Primary TypeTriode
EnvelopeSmall, metallised
Base MaterialOctal
SectionsSingle
Filament / Heater
Heater NotesDesigned for series operation or 12-volt battery
Absolute Maximum Ratings
Plate Voltage250 V
Audio Performance
Typical THD2.5%
Key Features
- Indirectly heated
- Small bulb dimensions
- Metallised bulb
- Series heater operation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Characteristics | 100 V | 3400 | 10600 | 36 | — |
| R.C.C. Amplifier (Condition 1) | 165 V | — | — | — | 1.4 mA |
| R.C.C. Amplifier (Condition 2) | 185 V | — | — | — | 1.4 mA |
Application Notes
The HL.133 may be used as an A.F. amplifier either with R.C. or transformer coupling, or as an oscillator where a high mu triode is required.
Datasheets
Datasheet: HL133.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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