Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Cathode Ray
Characteristics
Focusing method
Electrostatic
Deflection method
Electrostatic
Application
Application
Electrostatic charge printing
Specialized - Cathode Ray ·CathodeRay
SC3179
Five-inch radar indicator CRT with electrostatic focusing, magnetic deflection, aluminized screen, and sector-scan operation. Sylvania specifies high-voltage anode capability to approximately 12.5 kV.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- B9A
- Base pins
- -
- Nominal heater
- 6.3 V / 600 mA
Description
Five-inch radar indicator CRT with electrostatic focus, magnetic deflection, aluminized screen, and sector-scan service.
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
- -
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 600 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
Cathode Ray
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 12500 V
Special-purpose cathode-ray tube; published ratings and construction data captured.
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 02
1965 Sylvania Electronic Tubes Vol3
Published operating points and test conditions from this source.
SECTION 1
Cathode Ray
Characteristics
Heater voltage
6.3 V
Heater current
300 mA
Focusing method
Electrostatic
Deflection method
Magnetic
Other
Maximum principal anode/accelerator voltage
12000 V
Anode voltage maximum
12000 V
Grid2 voltage maximum
500 V
Typical anode voltage
8000 V
Typical focus-electrode voltage range
-40 to +250 V
Grid1 circuit resistance maximum
1.5 Mohm
Application
Application
Five-inch radar indicator CRT
Service
Radar indicator sector scan