Power - Triode (over 1000V 100W) ·Triode
High-power directly heated triode documented in the Standard Valves family. The available manufacturer material does not provide sufficiently clear functional wording or reliable detailed operating data to justify a narrower application classification.
Single-ended water-cooled triode replacing 4047-A, with high-voltage audio/modulator and radio-frequency operating data.
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
Published ratings/characteristics promoted; remaining useful source values represented as parameters.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Filament voltage range
18 to 20 V
Exact value marked on bulb
Total emission
6 A
Grid-anode capacitance
24 pF
Anode-filament capacitance
2 pF
Grid-filament capacitance
17 pF
Maximum direct anode current
1.5 A
Maximum plate voltage with anode modulation
10000 V
Maximum output
13.2 kW
ClassB;AF;TwoTubes
Carrier output
10 kW
ClassC;Telegraphy
Data set 02
Published operating points and test conditions from this source.
Heater/filament voltage
19 V
Heater/filament current
59 A
Plate resistance
7500 ohm
Transconductance
0.0053 A/V
Amplification factor
40
Maximum direct anode voltage
13000 V
Maximum anode dissipation
10000 W