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Nixie ·Nixie

ZM1031

Cold-cathode two-sign indicator dedicated to plus and minus display. Rather than a full numerical set, it provides direct polarity-sign indication, with manufacturer data specifying approximately 170 V ignition and operating supply.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
Noval
Socket code
B9A
Base pins
9
Nominal heater
-

Description

ZM1031 is a two-sign +/− indicator. It is a cold-cathode tube and is classified as Nixie for this batch. The published ignition/start voltage is 170 V. Published supply/operating voltage is 170 V.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
Noval
Socket code
B9A
Base pins
9
Nominal heater voltage
-
Nominal heater current
-
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Noval - 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

Nixie

X-ray radiationInterelectrode capacitances
Regulator starting voltage
170 V
Regulator maintaining voltage
140 V
Regulator dynamic impedance
4.5 Ω

Single indicator/counting section. Nixie-specific electrical ratings and operating data are retained 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

1965 Nixie Valvo

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristics

  • Ignition voltage

    170 V

    Typical characteristic

  • Burning voltage

    140 V

    At approximately 4 mA

  • Dynamic resistance

    4.5 kOhm

    At 2-10 mA

  • Symbol set

    +/-

    Direct glow display of signs

Other

  • Maximum supply voltage

    - to 170 V

    Absolute value

  • Maximum cathode current

    - to 5 mA

    Continuous

  • Maximum pulse cathode current

    - to 10 mA

    For pulse duration up to 20 ms

Data set 02

1967 Nixie La Radiotechnique

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristic

  • Ignition/Starting Voltage

    170 V

    Published ignition/start value

Other

  • Recommended/Minimum Supply Voltage

    170 V

    Published operating condition

Data set 03

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristics

  • Supply voltage Vba min., 170 V

    170 S

    Supply voltage Vba min., 170 V

  • Cathode current Ik 4 mA

    4 a

    Cathode current Ik 4 mA

  • Ignition voltage Vign < 170V

    170 v

    Ignition voltage Vign < 170V

  • Incremental resistance Ty 4.5 kQ

    4.5 a

    Incremental resistance Ty 4.5 kQ

  • Shield supply voltage Vbs 50 V

    50 S

    Shield supply voltage Vbs 50 V

  • Shield series resistance Rg 10 k@

    10 S

    Shield series resistance Rg 10 k@

  • "Off" anode voltage Var 90toll0 V

    90 a

    "Off" anode voltage Var 90toll0 V

  • Cathode selecting voltage Vigx 40to 70 V

    70 a

    Cathode selecting voltage Vigx 40to 70 V

  • Anode voltage necessary for ignition Va 170 Vv

    170 A

    Anode voltage necessary for ignition Va 170 Vv

Other

  • Maintaining voltage at Iy

    140 Ma

    Maintaining voltage at Iy =4 mA Vm 140 vV

  • Typical operation at temperatures tymp

    50 a

    Typical operation at temperatures tymp = 10 to 50 °C