Data set 01
1968 General Electric Co
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
PlatePowerOutput
22 kW
ClassB;AudioFrequency;TwoTubes
Power - Triode (over 1000V 100W) ·Triode
GL891
Large General Electric power triode for high-power audio, modulator, and transmitting service. Approximately 7.5 kW plate dissipation and 15 kV capability support tens of kilowatts from a two-tube Class B stage.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 11 V / 60 A
Description
Three-electrode transmitting tube with double filament for RF power amplification, oscillation, and modulation.
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater voltage
- 11 V
- Nominal heater current
- 60 A
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
1 physical section, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 12000 V
- Max plate dissipation
- 6000 W
Source-dependent data
Operating conditions by source
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.