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M8190

Special-quality subminiature gas-filled reference tube providing approximately 86 V at only about 0.5–3.5 mA.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B7G
Base pins: 7
Nominal heater: -

Description

SPECIAL QUALITY SUBMINIATURE VOLTAGE REFERENCE TUBE M I 9 Special quality 85V subminiature gas-filled voltage reference tube. PRELIMINARY DATA This data should be read in conjunction with the GENERAL NOTES— SPECIAL QUALITY VOLTAGE STABILISER & REFERENCE TUBES which precede this section of the handbook, and The supplied datasheet publishes electrical ratings and characteristics for this voltageregulator device.

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 voltage: 86 V
Regulator minimum current: 0.5 mA
Regulator maximum current: 3.5 mA
Regulator starting voltage: 125 V
Regulator maintaining voltage: 86 V
Regulator dynamic impedance: 1000 Ω

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

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Characteristic

RegulatorVoltage
86
Promoted field source value
RegulatorCurrentMinimum
0.0005
Promoted field source value
RegulatorCurrentMaximum
0.0035
Promoted field source value
RegulatorStartingVoltage
125
Promoted field source value
RegulatorMaintainingVoltage
86
Promoted field source value
RegulatorDynamicImpedance
1000
Promoted field source value

Other

Preferred burning current
2 mA

Data set 02

1971 Mullard Gas Filled Tubes

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Other

Ignition/striking voltage
125 V
Minimum cathode current
0.5 mA
Maximum cathode current
3.5 mA