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Power - Triode ·Triode

TW75

Thin-wall carbon-anode transmitting triode for high-frequency RF service, fully rated through approximately 60 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
UX4
Base pins
4
Nominal heater
7.5 V / 4.15 A

Description

Thin-wall carbon-anode transmitting triode intended for UHF applications and full-rated operation through 60 MHz.

Socket description

Medium-shell UX 4-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
UX4
Base pins
4
Nominal heater voltage
7.5 V
Nominal heater current
4.15 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
Amplification factor
20
Max plate voltage
2000 V
Max plate dissipation
75 W
Max cathode current
175 mA

Taylor TW75 directly heated 7.5 V, 4.15 A transmitting triode with thin-wall carbon plate, UX4 base, rated 75 W anode dissipation and operation at full ratings up to approximately 60 MHz. Class C telegraphy maximum DC anode current 175 mA, anode voltage 2000 V; Class C telephony has different current and dissipation limits. The 175 mA figure is a mode-specific DC plate-current rating, documented here rather than an unrestricted pulse-emission specification.

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

1940 Taylor Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Grid-plate capacitance

    1.8 pF

    Published general characteristics

  • Grid-filament capacitance

    3.35 pF

    Published general characteristics