Tube-number record
6CS5
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BrandTung-Sol
ClassBeam Pentode
BaseNoval (B9A)
Filament6.3 V @ 1.2 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeGlass Bulb
Base MaterialButton
Sectionssingle
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage400 V
Plate Dissipation10 W
Grid 2 Voltage150 V
H-C Voltage200 V
Audio Performance
Typical THD10%
Power Output3.8 W
Key Features
- Coated Unipotential Cathode
- Miniature Type
- Any Mounting Position
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier (110V) | 110 V | 8000 | 13000 | — | 49 mA |
| Class A Amplifier (200V) | 200 V | 8000 | 28000 | — | 46 mA |
| Triode Connection | 225 V | 3800 | 1500 | 6.2 | 22 mA |
Application Notes
The 6CS5 is a miniature beam pentode designed for use in audio power output stages where the supply voltage is furnished directly from the power lines by the use of a single diode rectifier.
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