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Voltage - Dual Triode (similar) ·Triode-Triode

7327

Subminiature double triode specifically designed for pulse applications, with high pulse-cathode-current capability, long life, and stable operation under high temperature, shock, and vibration.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
SUBMINIATURE8
Base pins
8
Nominal heater
6.3 V / 300 mA

Description

Heater-cathode subminiature double triode designed specifically for pulse applications, with long life and stable performance under high temperature, shock, and vibration.

Socket description

Subminiature 8-lead base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
SUBMINIATURE8
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
300 mA
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

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Max plate voltage
250 V
Max plate dissipation
0.95 W
Max grid dissipation
0.2 W

Published electrical section from 7327.pdf; identical repeated sections compressed when applicable.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Max plate voltage
250 V
Max plate dissipation
0.95 W
Max grid dissipation
0.2 W

Second physical triode restored.

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 Raytheon

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate Voltage Eb

    250 V

    Plate Voltage Eb --- .- .- 250 Vdc

  • Plate Dissipation Pp/p

    0.95 W

    Plate Dissipation Pp/p --- .- --- 0.95 Watts BASING

  • DC Grid Voltage Ec -55

    0 V

    DC Grid Voltage Ec -55 .- --- 0 Vde

  • Grid Dissipation Pg/g

    0.2 W

    Grid Dissipation Pg/g --- .- .- 0.2 Watts

  • Grid Circuit Res. Rgl

    1.1 meg

    Grid Circuit Res. Rgl --- --- --- 1.1 meg. Lead 1 Plate, Unit #2

  • Measure peak current across a

    1 Ω

    Measure peak current across a 1.0 ohm #0.1% resistor in the specified circuit.

  • purpose of inspection, use applicable reliable paragraphs of Spec. MIL—E_1. Plate Voltage

    150 V

    For the purpose of inspection, use applicable reliable paragraphs of Spec. MIL—E_1. Plate Voltage 150 Vde

  • Grid Voltage

    -30 V

    Grid Voltage -30 Vdc

  • 4,10.8 Heater Current 0.65 il 4.4 Code L I 280 300

    320 mA

    4,10.8 Heater Current 0.65 il 4.4 Code L I 280 300 320 mA

  • 4.10.7.5 Pulse Cathode Current (2): 0.65 Il 4.4 Code L ik 500

    750 mA

    4.10.7.5 Pulse Cathode Current (2): 0.65 Il 4.4 Code L ik 500 750 ma

  • Measure peak current across a

    1 Ω

    Measure peak current across a 1.0 ohm +0.1% resistor in the specified circuit.

  • approximately a “White Noise’’ spectrum which is free from discontinuities from 100 to

    5000 Hz

    approximately a “White Noise’’ spectrum which is free from discontinuities from 100 to 5000 cps and such thot the RMS value of

  • 50 to 8000 cps, shall be down no more than 5 db at

    10 Hz

    50 to 8000 cps, shall be down no more than 5 db at 10,000 cps and at 20 cps, and down at least 30 db at 13,000 cps. For reading

Capacitance

  • frequency of vibration is varied from

    30 Hz

    frequency of vibration is varied from 30 cps to 3000 cps and back to 30 cps.

  • Cgp Note 3 .. E e “ee Cgp 1.2 1.5

    1.8 pF

    Cgp Note 3 .. E e “ee Cgp 1.2 1.5 1.8 pf

  • Cin Note 3 “ee --- “-e Cin 1.4 1.9

    2.4 pF

    Cin Note 3 “ee --- “-e Cin 1.4 1.9 2.4 pf

  • Cout Section No. 1 .- cee Cout 0.20 0.28

    0.36 pF

    Cout Section No. 1 .- cee Cout 0.20 0.28 0.36 pf

  • Section No, 2 .- .e- Cout 0.22 0.32

    0.42 pF

    Section No, 2 .- .e- Cout 0.22 0.32 0.42 pf

  • Cag Cgg

    0.011 pF

    Cag Cgg 0.011 pf

  • Cpp Cpp

    0.5 pF

    Cpp Cpp 0.50 pf

  • of the plate and screen voltage supplies shall not exceed that of a

    40 pF

    of the plate and screen voltage supplies shall not exceed that of a 40 pf capacitor at 10 cps.

  • Note 8: A grid resistor of

    0.1 MΩ

    Note 8: A grid resistor of 0.1 megohm shall be added; however, this resistor shall not be used when a thyratron - type short indicator is

  • be varied from

    30 Hz

    be varied from 30 cps to 3000 cps and back to 30 cps with three minutes being the time required to sweep the range in each direc-