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Voltage Regulator ·VoltageRegulator

SR42

Subminiature molybdenum-cathode precision reference maintaining approximately 84 V over 0.5–2.5 mA, with firing anode for reliable ignition.

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

Description

Subminiature cold-molybdenum-cathode voltage reference tube for low-current stabilization from 0.5 to 2.5 mA.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
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
84 V
Regulator minimum current
0.5 mA
Regulator maximum current
2.5 mA
Regulator starting voltage
130 V
Regulator maintaining voltage
84 V

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

1962 Cerberus

Published operating points and test conditions from this source.

SECTION 1

Voltage Regulator

Characteristics

  • Breakdown voltage with firing anode

    90 V

    UAZ=150V

  • Firing-anode breakdown voltage

    150 V

  • Stabilized voltage

    82 to 86 V

    0.5mA

  • Regulation

    4.5 V

    0.5-2.5mA

  • Voltage jumps maximum

    1 mV