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Power - Triode ·Triode

830B

Thoriated-tungsten power triode for audio-modulator and RF amplifier or oscillator service, principally as a renewal type. Approximately 75 W plate dissipation and kilovolt-class operation support moderate transmitting and modulation applications.

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

Description

Thoriated-tungsten power triode for audio modulator and RF amplifier/oscillator service, used principally for renewal applications.

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
10 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
Amplification factor
25
Max plate voltage
1250 V
Max plate dissipation
75 W
Max cathode current
150 mA

Maximum ratings and characteristic constants promoted where reliably published in the approved sheet.

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

1938 RCA Transmitting Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • at maximum rated conditions at frequencies as high as

    15 MHz

    at maximum rated conditions at frequencies as high as 15 megacycles. The plate

  • dissipation for class C telegraph and class B services is

    60 W

    dissipation for class C telegraph and class B services is 60 watts. In class B audio

  • service two tubes of this type are capable of delivering an output of

    175 W

    service two tubes of this type are capable of delivering an output of 175 watts.

  • D-C Plate Voltage

    1000 V

    D-C Plate Voltage . 1000 max. Volts

  • D-C Plate Voltage . 800

    1000 V

    D-C Plate Voltage . 800 1000 Volts

  • Peak A-F Grid-to-Grid Voltage .. 250

    270 V

    Peak A-F Grid-to-Grid Voltage .. 250 270 Volts

  • Zero-Sig. D-C Plate Current .. 20

    20 mA

    Zero-Sig. D-C Plate Current .. 20 20 Milliamperes

  • Max.-Sig. D-C Plate Current. 280

    280 mA

    Max.-Sig. D-C Plate Current. 280 280 Milliamperes

  • Load Resistance (Per tube) . 1500

    1900 Ω

    Load Resistance (Per tube) . 1500 1900 Ohms

  • Effective Load Res. (Plate'to'plate) . 6000

    7600 Ω

    Effective Load Res. (Plate'to'plate) . 6000 7600 Ohms

  • Max.-Sig. Driving Power (Approx.) . 5

    6 W

    Max.-Sig. Driving Power (Approx.) . 5 6 Watts

  • Max.-Sig. Power Output (Approx.) . 135

    175 W

    Max.-Sig. Power Output (Approx.) . 135 175 Watts

  • D-C Plate Current

    100 mA

    D-C Plate Current.. 100 max. Milliamperes

  • Plate Input

    90 W

    Plate Input. 90 max. Watts

  • D-C Plate Voltage ... 800

    1000 V

    D-C Plate Voltage ... 800 1000 Volts

  • D-C Plate Current .. 95

    85 mA

    D-C Plate Current .. 95 85 Milliamperes

  • D-C Grid Current (Approx.) 7

    6 mA

    D-C Grid Current (Approx.) 7 6 Milliamperes

  • Driving Power (Approx.)t ... 9

    6 W

    Driving Power (Approx.)t ... 9 6 Watts

  • D-C Plate Voltage

    800 V

    D-C Plate Voltage ..... 800 max. Volts

  • D-C Grid Voltage

    -300 V

    D-C Grid Voltage..... -300 max. Volts

  • D-C Plate Current

    100 mA

    D-C Plate Current... 100 max. Milliamperes

  • D-C Grid Current

    30 mA

    D-C Grid Current...... 30 max. Milliamperes

  • D-C Plate Voltage... 600

    800 V

    D-C Plate Voltage... 600 800 Volts

  • D-C Plate Voltage

    1000 V

    D-C Plate Voltage . 1000 max. Volts

  • D-C Grid Voltage

    -300 V

    D-C Grid Voltage. ... -300 max. Volts

  • D-C Plate Current

    150 mA

    D-C Plate Current. 150 max. Milliamperes

  • D-C Grid Current

    30 mA

    D-C Grid Current.. . 30 max. Milliamperes

  • Plate Input

    150 W

    Plate Input.. 150 max. Watts

  • Plate Dissipation

    60 W

    Plate Dissipation . 60 max. Watts

  • D-C Plate Voltage . 600 800

    1000 V

    D-C Plate Voltage . 600 800 1000 Volts

  • Peak R-F Grid Voltage .. 235 245

    250 V

    Peak R-F Grid Voltage .. 235 245 250 Volts

  • D-C Plate Current ... 140 140

    140 mA

    D-C Plate Current ... 140 140 140 Milliamperes

  • Grid Resistor .-.. 3160 3500

    3670 Ω

    Grid Resistor .-.. 3160 3500 3670 Ohms

  • Driving Power (Approx.) - 7 7

    7 W

    Driving Power (Approx.) - 7 7 7 Watts

  • Power Output (Approx.) - 45 70

    90 W

    Power Output (Approx.) - 45 70 90 Watts

  • each stated value of grid voltage should be decreased by

    7 V

    each stated value of grid voltage should be decreased by 7 volts and the circuit returns made to the

Data set 02

1945 United Electronics

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Filament voltage

    10 V

  • Filament current

    2 A

Other

  • Maximum direct plate voltage

    1250 V

  • Maximum plate dissipation

    75 W

Data set 03

1950 General Electric Transmitting Types

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • HeaterOrFilamentVoltage

    10 V

  • HeaterOrFilamentCurrent

    2 A

Other

  • FrequencyForMaximumRatings

    15 MHz

Data set 04

1956 RCA Transmitting Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Amplification Factor

    25

Other

  • Maximum Plate Voltage

    1000 V

  • Maximum Plate Dissipation

    60 W

  • Maximum Cathode Current

    150 mA

  • Full-Input Operating Frequency Maximum

    15 MHz