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Tube Tinker — Electron Tube Database
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Voltage Regulator ·VoltageRegulator

SR51

Cold-cathode voltage stabilizer operating over approximately 2–60 mA, equivalent to the 0C2 regulator family.

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

Description

Cold-pure-metal-cathode voltage stabilizer tube, equivalent designation 0C2, for a 2-60 mA stabilizing range.

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 minimum current
2 mA
Regulator maximum current
60 mA
Regulator starting voltage
115 V
Regulator dynamic impedance
130 Ω

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

  • Stabilized voltage

    75 to 81 V

    30mA

  • Regulation maximum

    8 V

    2-60mA

  • Service life minimum

    10000 h

Other

  • Inverse anode voltage maximum

    50 V