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

211

High-power filamentary triode widely specified for RF amplifier and oscillator duty and also usable as an audio-frequency power amplifier or modulator. Manufacturer data include high-voltage plate operation and substantial output power.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
J4
Base pins
-
Nominal heater
10 V / 3.25 A

Description

The RCA 211 is a thoriated-tungsten transmitting power triode for af/rf service. The supplied source provides transmitting, RF, or rectifier ratings appropriate to this device.

Socket description

Jumbo 4-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
J4
Base pins
-
Nominal heater voltage
10 V
Nominal heater current
3.25 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
0.00353 S
Amplification factor
12
Max plate voltage
1250 V
Max plate dissipation
125 W
Max cathode current
175 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

  • filament type with a maximum plate dissipation of

    100 W

    filament type with a maximum plate dissipation of 100 watts for class C telegraph

  • operated at maximum rated conditions at frequencies as high as

    15 MHz

    operated at maximum rated conditions at frequencies as high as 15 megacycles.

  • D-C Plate Voltage

    1250 V

    D-C Plate Voltage - 1250 max. Volts

  • D-C Plate Current

    150 mA

    D-C Plate Current----- 150 max. Milliamperes

  • Plate Input

    150 W

    Plate Input --- 150 max. Watts

  • D-C Plate Voltage--- 1000

    1250 V

    D-C Plate Voltage--- 1000 1250 Volts

  • D-C Plate Current- 130

    106 mA

    D-C Plate Current- 130 106 Milliamperes

  • Driving Power (Approx.)t. 10

    7.5 W

    Driving Power (Approx.)t. 10 7.5 Watts

  • D-C Plate Voltage

    1000 V

    D-C Plate Voltage . . .... 1000 max. Volts

  • D-C Plate Current

    175 mA

    D-C Plate Current... 175 max. Milliamperes

  • D-C Grid Current

    50 mA

    D-C Grid Current........ 50 max. Milliamperes

  • D-C Plate Voltage.......... 750

    1000 V

    D-C Plate Voltage.......... 750 1000 Volts

  • Peak R-F Grid Voltage -....... 350

    410 V

    Peak R-F Grid Voltage -....... 350 410 Volts

  • D-C Plate Current..... 150

    150 mA

    D-C Plate Current..... 150 150 Milliamperes

  • Crrif Resistor ....... 5710

    7430 Ω

    Crrif Resistor ....... 5710 7430 Ohms

  • Plate Dissipation

    100 W

    Plate Dissipation .. . 100 max. Watts

  • D-C Plate Voltage. 750 1000

    1250 V

    D-C Plate Voltage. 750 1000 1250 Volts

  • D-C Grid VoltageS .. -135 -175

    -225 V

    D-C Grid VoltageS .. -135 -175 -225 Volts

  • Peak R-F Grid Voltage.... 275 315

    375 V

    Peak R-F Grid Voltage.... 275 315 375 Volts

  • D-C Plate Current .-.- 150 150

    150 mA

    D-C Plate Current .-.- 150 150 150 Milliamperes

  • Driving Power (Approx.) --...... 5 6

    7 W

    Driving Power (Approx.) --...... 5 6 7 Watts

  • Power Output (Approx.) .-. 65 100

    130 W

    Power Output (Approx.) .-. 65 100 130 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

  • For high-frequency operation above

    15 MHz

    For high-frequency operation above 15 megacycles,

Data set 02

193X Taylor Transmitting

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Filament Voltage

    10 V

    Nominal published value

  • Filament Current

    3.85 A

    Nominal published value

  • Maximum Operating Plate Voltage

    1500 V

    Class C oscillator / RF power-amplifier service where published

  • Maximum Plate Dissipation

    100 W

    Published maximum rating

  • Grid to Filament, mmf

    7 pF

    Published direct interelectrode capacitance

  • Plate to Filament, mmf

    6 pF

    Published direct interelectrode capacitance

Characteristics

  • Plate Resistance

    3400 ohm

    Published general characteristic

  • Mutual Conductance

    3530 µS

    Published general characteristic

  • Amplification Factor

    12

    Published general characteristic

Data set 03

1940 Taylor Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Plate-to-grid capacitance

    14 pF

  • Grid-to-filament capacitance

    7 pF

  • Plate-to-filament capacitance

    6 pF

Data set 04

1945 United Electronics

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Filament voltage

    10 V

  • Filament current

    3.25 A

Other

  • Maximum direct plate voltage

    1250 V

  • Maximum plate dissipation

    125 W

  • Maximum direct plate current

    175 mA

Data set 05

1950 General Electric Transmitting Types

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum full-rating frequency

    15 MHz

  • Reduced-rating frequency

    80 MHz

Application

  • Service

    Audio-frequency amplifier / modulator

Data set 06

1956 RCA Transmitting Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Maximum Plate/Inverse Voltage

    1250 V

    Source rating

  • Maximum Plate Dissipation

    100 W