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Voltage - Triode (single high frequency) ·Triode

4671

Acorn triode for high-frequency amplification, oscillator, and detector service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
WITHOUTBASE-XIII
Socket code
-
Base pins
-
Nominal heater
6.3 V / 150 mA

Description

Acorn triode for HF amplification, oscillator, and detector service.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
WITHOUTBASE-XIII
Socket code
-
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
150 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

WITHOUTBASE-XIII - 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
12500 Ω
Transconductance
0.002 S
Amplification factor
25
Max plate voltage
200 V
Max plate dissipation
1.5 W
Max cathode current
10 mA

Promoted only from clearly identified published characteristics/limits; additional operating, capacitance, regulator, gas-tube, and push-pull data retained as section 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

1938 Philips Miniwatt Vacuum Tube Catalog

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate current

    4.5 mA

    UHFAmplifier

  • Control-grid voltage

    -6 V

    UHFAmplifier

Characteristic

  • Plate resistance

    12500 Ω

    UHFAmplifier

  • Transconductance

    2000 µS

    UHFAmplifier

  • Amplification factor

    25

    UHFAmplifier

Capacitance

  • Grid-to-plate capacitance

    1.4 pF

    Section1

  • Plate-to-cathode capacitance

    0.6 pF

    Section1

  • Grid-to-cathode capacitance

    1 pF

    Section1

Data set 02

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • HF amplifier plate voltage operating

    90 V

  • HF amplifier plate current

    2.5 mA

  • HF amplifier grid voltage

    -2.5 V

  • Alternate plate voltage operating

    135 V

  • Alternate plate current

    3.5 mA

  • Alternate grid voltage

    -3.75 V

  • Plate voltage maximum

    180 V

  • Plate dissipation maximum

    1.5 W

  • Cathode current maximum

    10 mA

  • Grid current maximum

    2 mA

  • Grid circuit resistance maximum

    5 Mohm

  • Heater-cathode voltage maximum

    50 V

  • Heater-cathode resistance maximum

    20000 ohm

  • Detector plate voltage - anode bend

    180 V

  • Detector grid voltage - anode bend

    -7 V

  • Detector plate voltage - leaky grid

    45 V

Characteristics

  • HF amplifier amplification factor

    25

  • HF amplifier transconductance

    1.7 mA/V

  • HF amplifier plate resistance

    14700 ohm

  • Alternate transconductance

    1.9 mA/V

  • Alternate plate resistance

    13200 ohm

Application

  • Application

    HF amplifier / oscillator / detector