Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Voltage Regulator ·VoltageRegulator

7099

Low-current inert-gas cold-cathode regulator providing approximately 155 V stabilization at only about 75–300 µA.

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

Description

THE 7099 IS A LOW CURRENT, TWO ELEMENT, INERT-GAS-FILLED, COLD CATHODE,

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
-
Socket code
B9A
Base pins
9
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
155 V
Regulator minimum current
0.075 mA
Regulator maximum current
0.3 mA
Regulator starting voltage
180 V
Regulator maintaining voltage
155 V

Published ratings and characteristics promoted from approved datasheet.

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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Characteristic

  • Anode breakdown voltage bogey

    180 V

  • Tube voltage drop at 0.075 mA bogey

    155 V

  • Tube voltage drop at 0.3 mA bogey

    156.5 V

  • Tube voltage drop at 0.3 mA maximum

    162 V

  • Regulation 0.075 to 0.150 mA bogey

    0.4 V

  • Regulation 0.150 to 0.300 mA bogey

    0.6 V

Other

  • Anode breakdown voltage maximum

    200 V

  • Maximum bulb temperature

    100 C

  • Minimum ambient temperature

    -55 C

  • Maximum altitude

    60000 ft

  • Shunt capacitor maximum

    0.1 uF

Data set 02

1966 Tung Sol Electronic Tubes 4 of 4

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Characteristic

  • Regulator voltage

    155 V

    Promoted published value

  • Regulator minimum current

    0.075 mA

    Promoted published value

  • Regulator maximum current

    0.3 mA

    Promoted published value

  • Regulator maintaining voltage

    155 V

    Promoted published value

  • APPROXIMATELY

    0.3 V

Other

  • MAXIMUM DC CATHODE CURRENT

    0.3 mA

    RATINGS

  • MINIMUM OC CATHODE CURRENT

    0.075 mA

    RATINGS

  • BULB TEMPERATURE (MAX.)

    100 mA

    RATINGS

  • AMBIENT TEMPERATURE (MIN.) —

    55 C

    RATINGS

  • ALTITUDE (MAX.) 60 OOO FEET

    60 mA

    RATINGS

  • OC ANODE SUPPLY VOLTAGE 225A ---- --- VOLTS

    225 V

    RATINGS

  • ANODE BREAKDOWN VOLTAGE --- 1$O ZOO VOLTS

    1 V

    RATINGS

  • TUBE VOLTAGE DROP AT

    155 V

    RATINGS

  • TUBE VOLTAGE DROP AT

    162 V

    RATINGS

  • REGULATION — 0.075 THROUGH

    2.5 V

    RATINGS

  • REGULATION — O.i50 THROUGH

    4 V

    RATINGS

  • LEAKAGE CURRENT AT —

    2 V

    RATINGS

  • IS A MAXIMUM E BB MAX.1; WHEN THE LOAD CURRENT IS A MINIMUM (IL MIN.);

    1 mA

    RATINGS.

  • RECOMMENDED UNLESS A.RESISTANCE OF APPROXIMATELY

    100 mA

    RATINGS.