EC91
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BrandPHILIPS
ClassGrounded Grid Triode
BaseMiniature
Filament6.3V @ 300mA
Construction
Primary Typetriode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirect by A.C. or D.C.; Series or parallel supply
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation2.5 W
Grid 1 Voltage-100 V
Cathode Current15 mA
H-C Voltage150 V
Audio Performance
Key Features
- Grounded grid triode
- For ultra short wave purposes
- Up to 250 Mc/s
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Grounded Grid | 250V | 8500 | 12000 | 100 | 10mA |
Application Notes
Designed for ultra short wave applications up to 250 MHz using grounded grid configuration.
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