Z502S
0 Tubes in archive
BrandPhilips
ClassDecade Selector Tube
BaseDuodecal with additional bottom cap
Construction
Primary TypeCold cathode gas-filled
EnvelopeGlass
Sections10 main cathodes
Filament / Heater
Absolute Maximum Ratings
Cathode Current0.55 mA
Audio Performance
Key Features
- Cold cathode
- Gas-filled
- Bi-directional
- Visual indication
- 10 main cathodes separately brought out
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Double pulse drive | 475V | - | 820000 | - | 0.34mA |
Application Notes
For visual indication the tube is viewed through the dome of the envelope. K0 is aligned with pin 11 within +/- 12 degrees. Mounting position is arbitrary.
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