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Power - Triode ·Triode

825

Low-mu version of the Taylor 756 power triode for transmitting and RF power service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
UX4
Base pins
4
Nominal heater
7.5 V / 2 A

Description

Taylor 825 is stated to be the same as the 756 except that its amplification factor is 8.

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
2 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
15600 Ω
Transconductance
0.0016 S
Amplification factor
8
Max plate voltage
1250 V
Max plate dissipation
40 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 Voltage

    7.5 V

    Nominal published value

  • Filament Current

    2 A

    Nominal published value

  • Maximum Operating Plate Voltage

    1250 V

    Class C oscillator / RF power-amplifier service where published

  • Maximum Plate Dissipation

    40 W

    Published maximum rating

  • Plate to Grid, mmf

    8 pF

    Published direct interelectrode capacitance

  • Grid to Filament, mmf

    3.5 pF

    Published direct interelectrode capacitance

  • Plate to Filament, mmf

    2.7 pF

    Published direct interelectrode capacitance

Characteristics

  • Plate Resistance

    15600 ohm

    Published general characteristic

  • Mutual Conductance

    1600 µS

    Published general characteristic

  • Amplification Factor

    25

    Published general characteristic

Data set 02

1940 Taylor Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Plate current

    110 mA

    PlateVoltage=850V