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Voltage Regulator ·VoltageRegulator

5644

Rugged subminiature cold-cathode gas-filled voltage stabilizer maintaining roughly 90 V over approximately 5–25 mA.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
4N
Socket code
B7G
Base pins
7
Nominal heater
-

Description

Cold-cathode gas-filled glow-discharge voltage regulator, approximately 95 V.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
4N
Socket code
B7G
Base pins
7
Nominal heater voltage
-
Nominal heater current
-
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

4N - 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

Voltage Regulator

X-ray radiationInterelectrode capacitances
Regulator voltage
90 V
Regulator minimum current
5 mA
Regulator maximum current
25 mA
Regulator starting voltage
135 V
Regulator maintaining voltage
90 V

Subminiature gas-filled shock- and vibration-resistant voltage stabilizer tube.

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

Voltage Regulator

Characteristics

  • Regulator maintaining voltage

    90 V

    Approximate published operating voltage

  • Regulator current

    5 mA to 25 mA

    Published operating-current range

  • Ionization voltage

    175 V

    Published total-darkness test limit

Data set 02

1963 Philips Electron Tubes Handbook V2

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Other

  • Operating current

    5 mA

    LowCurrentPoint

  • Operating current

    25 mA

    HighCurrentPoint

  • Maximum shunt capacitance

    - to 0.1 uF

Characteristic

  • Ignition voltage

    - to 125 V

  • Voltage regulation

    - to 5 V

Data set 03

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Construction

  • Filling

    Gas

Characteristics

  • Maintaining voltage range

    85-105 V

    OperatingCurrentRange

  • Maintaining voltage end-of-life range

    82-108 V

  • Regulation current range

    5-25 mA

Other

  • Maximum striking voltage

    135 V