GC 12/4B
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ClassBi-directional 12-way Computing Tube
BaseI.O.
Construction
Primary TypeCold Cathode
EnvelopeGlass
Sections12-way
Filament / Heater
Absolute Maximum Ratings
Cathode Current0.55 mA
Audio Performance
Key Features
- Bi-directional
- Intermediate Outputs
- 12-way computing
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Recommended Operating Conditions | 475V | - | 820000 | - | 0.31mA |
Application Notes
The required anode current may be obtained from a 475 V supply via an 820 kOhm resistor. Cathode B is aligned with pin No. 6 to an accuracy of +/- 10 degrees.
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