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Power - Triode (over 1000V 100W) ·Triode

V1505

Radiation-cooled directly heated thoriated-filament power triode for amplifier or oscillator operation at lower radio frequencies. Moderate plate dissipation and multi-kilovolt capability provide useful transmitting power.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
14 V / 6.5 A

Description

Directly heated thoriated-filament radiation-cooled triode for power-amplifier or oscillator operation to 1.5 MHz.

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
14 V
Nominal heater current
6.5 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
Plate resistance
2000 Ω
Transconductance
0.008 S
Amplification factor
16
Max plate voltage
3000 V
Max plate dissipation
275 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.

Data set 01

1961 AEI Industrial Valves

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum filament emission

    4 A

  • Maximum operating frequency

    1.5 MHz

    FullRating

  • Audio power output

    800 W

    TwoTubes

Capacitance

  • Anode-grid capacitance

    18 pF

  • Anode-filament capacitance

    9 pF

  • Grid-filament capacitance

    14 pF

Data set 02

1961 Associated Electrical Industries

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum filament emission

    4 A

  • Maximum operating frequency

    1.5 MHz

    FullRating

  • Audio power output

    800 W

    TwoTubes

Capacitance

  • Anode-grid capacitance

    18 pF

  • Anode-filament capacitance

    9 pF

  • Grid-filament capacitance

    14 pF