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Voltage Regulator ·VoltageRegulator

M8225

Low-voltage Mullard gas stabilizer maintaining approximately 78 V for heaterless low-current reference and shunt-regulator circuits.

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

Description

Gas-filled voltage reference or stabiliser tube for regulated reference-level service.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B7G
Base pins
7
Nominal heater voltage
-
Nominal heater current
-
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

Voltage Regulator

X-ray radiationInterelectrode capacitances
Regulator minimum current
2 mA
Regulator starting voltage
110 V
Regulator maintaining voltage
78 V

Gas-discharge device.

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

1971 Mullard Gas Filled Tubes

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Characteristic

  • Maintaining voltage

    78 V

  • Regulation voltage

    5 V

Other

  • Ignition/striking voltage

    110 V

  • Minimum cathode current

    2 mA