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Voltage Regulator ·VoltageRegulator

75C1

Cold-cathode stabilizer/reference tube operating near 78 V over a broad specified current range.

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

Description

The Philips 75C1 is a cold-cathode voltage stabilising or reference tube operating near 78 V.

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
78 V
Regulator minimum current
2 mA
Regulator maximum current
64 mA
Regulator starting voltage
115 V
Regulator maintaining voltage
78 V
Regulator dynamic impedance
130 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

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Characteristic

  • Nominal maintaining voltage

    78 V

  • Voltage variation over current range

    6 V

Other

  • Current range

    2 to 60 mA

  • Nominal current

    30 mA

  • Radioactive starting aid

    present

    No harmful radiation stated by source

Data set 02

1957 Philips Receiving and Amplifying Tubes

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Characteristics

  • Maintaining/Reference Voltage

    78 V

Other

  • Minimum Current

    2 mA

  • Maximum Current

    60 mA

Data set 03

1963 Philips Electron Tubes Handbook V2

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Characteristic

  • Maintaining voltage at 30 mA

    75 to 81 V

  • Voltage regulation

    5 to 8 V

    Ia=2-60mA

Data set 04

1971 Mullard Gas Filled Tubes

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Characteristic

  • Maintaining voltage

    78 V

  • Incremental resistance

    130 ohm

  • Regulation voltage

    5 V

Other

  • Ignition/striking voltage

    115 V

  • Minimum cathode current

    2 mA

  • Maximum cathode current

    64 mA

Data set 05

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Characteristics

  • Maintaining voltage minimum

    75 V

    Ia30mA

  • Maintaining voltage maximum

    81 V

    Ia30mA

  • Regulation maximum

    8 V

    Ia2to60mA

  • Incremental resistance maximum

    200 Ohm

  • R gulation (I

    -60 mA

    PublishedLine: Régulation (I = 2-60 mA)

  • Iaz) max

    7 mA

    PublishedLine: Iaz) = max, 7 mA

  • Pour des courants

    10 mA

    PublishedLine: Pour des courants ¢10 mA on peut expecter des sauts de

  • werden bei Strtme

    10 mA

    PublishedLine: werden bei Strtme <10 mA

  • Va (Ia

    30 ma

    PublishedLine: Va (Ia = 30 ma) = 75-81 V

  • R gulation (Ia

    -60 mA

    PublishedLine: Régulation (Ia = 2-60 mA) - m g 3

  • Pour des courants

    10 mA

    PublishedLine: Pour des courants <10 mA on peut expecter des sauts de

  • werden bei Strime

    10 mA

    PublishedLine: werden bei Strime <10 mA

Other

  • Anode current minimum

    2 mA

  • Anode current maximum

    60 mA

  • Starting current maximum

    100 mA

  • Starting voltage maximum

    115 V

  • I min

    2 mA

    PublishedLine: I = min, 2,0 mA

  • a max

    60 mA

    PublishedLine: a = max. 60 mA

  • Intensit au d marrage max

    100 ma

    PublishedLine: Intensité au démarrage = max. 100 ma °)

  • Ia max.

    0 mA

    PublishedLine: Ia {: max. &0 mA

  • Intensit au d marrage max

    100 mA

    PublishedLine: Intensité au démarrage max, 100 mA 3)