T200

High-power Taylor transmitting triode for RF transmitters and diathermy equipment. Rated around 200 W plate dissipation and 2.5 kV, it was promoted as a substantial amateur and professional RF power tube.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: JUMBO4B
Base pins: 4
Nominal heater: 10 V / 4 A

Description

High-power transmitting triode known as the 'Amateur's Power House Tube,' used for RF transmitters and diathermy equipment.

Socket description

Super Jumbo 4-pin bayonet

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: JUMBO4B
Base pins: 4
Nominal heater voltage: 10 V
Nominal heater current: 4 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: 3400 Ω
Transconductance: 0.0048 S
Amplification factor: 16.6
Max plate voltage: 2500 V
Max plate dissipation: 200 W

Published maximum ratings and characteristics promoted from the approved datasheet; mode-specific values preserved as parameters.

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

193X Taylor Transmitting

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Filament Current
4 A
Nominal published value
Maximum Operating Plate Voltage
2500 V
Class C oscillator / RF power-amplifier service where published
Maximum Plate Dissipation
200 W
Published maximum rating
Plate to Filament, mmf
3 pF
Published direct interelectrode capacitance
Filament Voltage Range
10 to 11 V
Published filament-voltage range

Characteristics

Plate Resistance
3400 ohm
Published general characteristic
Mutual Conductance
4800 µS
Published general characteristic
Amplification Factor
16.6
Published general characteristic

Data set 02

1940 Taylor Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Grid-plate capacitance
7.9 pF
Published general characteristics
Grid-filament capacitance
9.5 pF
Published general characteristics
Plate-filament capacitance
1.8 pF
Published general characteristics