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Tube Tinker — Electron Tube Database
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Voltage Regulator ·VoltageRegulator

75B1

Miniature gas-filled voltage stabilizer with auxiliary ignition electrode for reliable starting and approximately 70–80 V regulation.

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

Description

Miniature gas-filled voltage-stabiliser tube with auxiliary ignition electrode, maintaining roughly 70 to 80 V over its specified current range.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

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

B7G - 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
75 V
Regulator minimum current
2 mA
Regulator maximum current
22 mA
Regulator starting voltage
110 V
Regulator maintaining voltage
75 V

Promoted values are taken directly from the supplied datasheet; additional ratings, characteristics and operating points are preserved in TUBE_SECTION_PARAMETER.

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

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Other

  • Minimum voltage necessary for ignition

    110 V

  • Maximum burning current

    22 mA

  • Minimum burning current

    2 mA

Characteristics

  • Maximum ignition voltage

    110 V

  • Burning voltage minimum

    70 V

  • Burning voltage maximum

    80 V

  • Maximum burning-voltage variation

    6 V

    CurrentRange=2-20mA