7504S
0 Tubes in archive
BrandMullard
ClassDecade Selector and Counting Tube
BaseB13B
Construction
Primary TypeCold-cathode
EnvelopeGlass
Sections10 main cathodes
Filament / Heater
Absolute Maximum Ratings
Plate Voltage550 V
Grid 1 Voltage-20 V
Cathode Current0.525 mA
Audio Performance
Key Features
- Short all-glass
- Neon-type glow
- Bidirectional counting
- High mechanical tolerances
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Recommended Double Pulse Drive | 475V | - | - | - | 0.34mA |
Application Notes
Unused cathodes should be connected together and returned to zero voltage. All voltages are referred to the most positive supply potential to which any main cathode is returned.
Sort by
Showing 1 to 0 of 0 results