35X4
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BrandFIVRE (Fabbrica Italiana Valvole Radio Elettriche)
ClassHalf-wave Rectifier
Base7-pin miniature
Filament35V @ 150mA
Construction
Primary Typediode
Rectifier Typehalf-wave
Envelopeglass
Sectionssingle
Filament / Heater
Heater NotesIndirect heating
Absolute Maximum Ratings
Plate Voltage700 V
Cathode Current100 mA
H-C Voltage450 V
Audio Performance
Key Features
- Any mounting position
- Miniature 7-pin base
- Indirectly heated cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| half-wave rectifier (110V) | 110V | - | 15 | - | 100mA |
| half-wave rectifier (125V) | 125V | - | 15 | - | 100mA |
| half-wave rectifier (220V) | 220V | - | 100 | - | 100mA |
Application Notes
An input voltage higher than 125V can be used provided a resistor of at least 100 Ohms is inserted in series with the anode conductor. With a filter input capacitor higher than 40 microfarads, it may be necessary to increase anode circuit impedance to maintain peak current limits.
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