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Voltage Regulator ·VoltageRegulator

OB2

Gas-filled voltage regulator providing approximately 108 V stabilization over roughly 5–30 mA for reference and regulated-supply circuits.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
5B0
Socket code
B7G
Base pins
7
Nominal heater
-

Description

Miniature type cold-cathode, glow-discharge tube used in voltage regulator applications. Outlines section, 5D; requires miniature 7-contact socket. 5B0

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
5B0
Socket code
B7G
Base pins
7
Nominal heater voltage
-
Nominal heater current
-
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

5B0 - 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
108 V
Regulator minimum current
5 mA
Regulator maximum current
30 mA
Regulator starting voltage
133 V
Regulator maintaining voltage
108 V
Regulator dynamic impedance
350 Ω

Published electrical characteristics preserved in parameter rows; regulator-specific fields 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 30 mA

    112 V

    Published datasheet value

  • Maximum peak current

    75 mA

    Published datasheet value

  • Maximum regulation 5-30 mA

    3.5 V

    Published datasheet value

Characteristic

  • Minimum stabilising voltage at 5 mA

    105 V

    Published datasheet value

Data set 02

1950 General Electric Transmitting Types

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Other

  • Anode Supply Voltage

    133 V

Data set 03

1953 AEG

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Construction

  • Filling

    Inert gas

Data set 04

1957 Philips Receiving and Amplifying Tubes

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Characteristics

  • Operating Voltage

    108 V

Other

  • Ignition Voltage Maximum

    127 V

Data set 05

1962 Cerberus

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Other

  • Breakdown voltage A-K

    127 V

  • Inverse anode voltage

    75 V

  • Starting current

    75 mA

  • Typical supply voltage

    250 V

  • Typical operating current

    15 mA

Characteristics

  • Stabilized voltage at 30 mA

    112 V

  • Stabilized voltage at 5 mA

    105 V

  • Operating current

    5 to 30 mA

  • Regulation over 5-30 mA

    3.5 V

  • RMS noise voltage

    5 mV

    5-30 mA; 50-5000 Hz

  • Life expectancy

    10000 to - h

    Exceeding

Data set 06

1963 Philips Electron Tubes Handbook V2

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Characteristic

  • Maintaining voltage at 17.5 mA

    106 to 111 V

  • Nominal maintaining voltage

    108 V

  • Ignition voltage

    - to 127 V

    Typical maximum

  • Voltage regulation

    - to 3.5 V

    Ia=5-30mA

Other

  • Absolute maximum ignition voltage

    - to 133 V

  • Operating current minimum

    5 mA

  • Operating current maximum

    30 mA

  • Maximum starting current

    - to 75 mA

  • Maximum shunt capacitance

    - to 0.1 uF

Data set 07

1971 RCA HB3 Binder 2 of 7

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Other

  • Average starting current

    75 mA

  • DC cathode current

    5 mA to 30 mA

  • Ambient temperature range

    -55 to +90 C

  • Maximum shunt capacitance

    0.1 uF

  • Minimum DC anode supply voltage

    133 V

Characteristic

  • Anode breakdown / starting voltage

    133 V

  • Anode voltage drop

    101 to 114 V

  • Regulation over specified cathode-current range

    - to 4 V

Data set 08

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Characteristic

  • in voltage regulator applications. Outlines section,

    5

    Published value from supplied target entry

  • Average Starting Current*

    75

    Published value from supplied target entry

  • DC Cathode Current

    30 mA

    Published value from supplied target entry

  • DC Anode-Supply Voltage

    133 volts

    Published value from supplied target entry

  • Anode Breakdown Voltage

    133 volts

    Published value from supplied target entry

  • Anode Voltage Drop

    114 volts

    Published value from supplied target entry

  • Regulation (

    4 mA

    Published value from supplied target entry

  • in voltage regulator applications. Outlines section,

    22

    Published value from supplied target entry

  • Average Starting Current*

    100 mA

    Published value from supplied target entry

  • DC Cathode Current

    4

    Published value from supplied target entry

Capacitance

  • Shunt Capacitor

    0.1

    Published value from supplied target entry