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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

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Recommended Operating Conditions475V-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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