Tube-number record
TY4-500
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TY4-500 is a tube type in the TubeDatabase archive (class: V.H.F. Power Triode). Recorded specifications: brand Mullard, construction Triode, base Glass, maximum plate voltage 4000 V, and maximum plate dissipation 450 W. The archive does not yet hold a photographed example of this type.
BrandMullard
ClassV.H.F. Power Triode
Construction
Primary TypeTriode
EnvelopeAll-glass
Base MaterialGlass
SectionsSingle
Filament / Heater
MaterialThoriated tungsten
Absolute Maximum Ratings
Plate Voltage4000 V
Plate Dissipation450 W
Cathode Current650 mA
Audio Performance
Typical THD5%
Power Output2440 W
Key Features
- All-glass triode
- Thoriated tungsten filament
- Suitable for use up to 120 Mc/s
- Radiation cooling below 50 Mc/s
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| R.F. Power Amplifier (Class C Telegraphy) | 4000 V | 4500 | — | 28 | 535 mA |
| R.F. Power Amplifier (Class C Anode Modulation) | 3000 V | 4500 | — | 28 | 450 mA |
| A.F. Class B Amplifier (2 valves) | 4000 V | 4500 | — | 28 |
Application Notes
To ensure equal distribution of the currents through the seals the grid leads should be strapped together at the valve holder and the circuit connections joined to the midpoint of the strap. Above 50 Mc/s, a low velocity flow of air may be required on the anode seal and base.
Datasheets
Datasheet: TY4-500.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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