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Voltage Regulator ·VoltageRegulator

OC3

Gas-filled 108 V voltage regulator with a broad approximately 5–40 mA operating range for heaterless shunt regulation.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
4AJ
Socket code
IO
Base pins
8
Nominal heater
-

Description

Industrial cold-cathode glow-discharge voltage regulator for regulated DC supply service.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
4AJ
Socket code
IO
Base pins
8
Nominal heater voltage
-
Nominal heater current
-
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

4AJ - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN2KAK — CathodeUnverified

EIA Base Connections, printed page 127, 4AJ

PIN5PAP — Plate (Anode)Unverified

EIA Base Connections, printed page 127, 4AJ

Section ratings

1 physical section, each with unique specifications.

Section 1

Voltage Regulator

X-ray radiationInterelectrode capacitances
Max cathode current
40 mA
Regulator voltage
108 V
Regulator minimum current
5 mA
Regulator maximum current
40 mA
Regulator starting voltage
115 V
Regulator maintaining voltage
108 V

Published ratings/characteristics promoted where applicable.

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

1946 Standard Telephone and Cables

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Other

  • Maximum stabilising voltage at 40 mA

    112 V

    Published datasheet value

  • Maximum peak current

    100 mA

    Published datasheet value

  • Maximum regulation 5-40 mA

    4 V

    Published datasheet value

Characteristic

  • Minimum stabilising voltage at 5 mA

    105 V

    Published datasheet value

Data set 02

1971 RCA HB3 Binder 2 of 7

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Other

  • Average starting current

    - to 100 mA

    Starting period <=10 s

  • DC cathode current maximum

    - to 40 mA

    Steady-state

  • DC cathode current minimum

    5 to - mA

    Steady-state

  • Ambient temperature minimum

    -55 to - °C

  • Ambient temperature maximum

    - to 90 °C

  • Shunt capacitor maximum

    - to 0.1 µF

Characteristics

  • DC anode supply voltage minimum

    133 to - V

    To insure starting throughout useful life

  • Anode breakdown voltage average

    115 V

  • Anode breakdown voltage maximum

    - to 133 V

  • Anode voltage drop minimum

    103 to - V

  • Anode voltage drop average

    108 V

  • Anode voltage drop maximum

    - to 116 V

  • Regulation average

    2 V

    DC cathode current 5 to 40 mA

  • Regulation maximum

    - to 4 V

    DC cathode current 5 to 40 mA

Data set 03

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Other

  • Average starting current

    100 mA

    Starting

  • DC cathode current

    40 mA

  • Shunt capacitor maximum

    0.1 uF

Characteristic

  • DC anode-supply voltage

    133 V

    MinimumForStarting

  • Anode breakdown voltage

    115 V

    Average

  • Anode voltage drop

    108 V

    Average

  • Anode voltage drop minimum

    103 V

    EquipmentDesign

  • Anode voltage drop maximum

    116 V

    EquipmentDesign

  • Regulation

    4 V

    5to40mA