Data set 01
1938 National Union
Published operating points and test conditions from this source.
SECTION 1
Ballast
Other
in an ST
12 in
Published source value; see source line context.
Specialized - Ballast ·Ballast
1V1
Current-regulating ballast tube designed to maintain approximately 540 mA in its specified series circuit.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- -
Description
Current-regulating ballast tube rated about 540 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
- 540 mA
- 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
Ballast
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Current-regulating ballast/reference source; no ordinary electrode ratings/characteristics table is published, so promoted active-section fields are intentionally not inferred.
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.