Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Ballast
Characteristic
Ballast Current Rating
550 mA
Specialized - Ballast ·Ballast
1K1
RMA ballast type rated for approximately 550 mA, using the standardized old four-pin base arrangement.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- 4
- Nominal heater
- -
Description
RMA ballast type rated 550 mA; the correction changes its base designation to the old four-pin base.
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- -
- Base pins
- 4
- 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
Ballast
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Published values promoted where applicable; sparse source sheets remain sparse rather than 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.