Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Cathode Ray
Characteristics
Focusing method
Electrostatic
Deflection method
Magnetic
Application
Application
Electrostatic charge printing
Specialized - Cathode Ray ·CathodeRay
SC3144
High-speed electrostatic-charge printing CRT with magnetic focusing and magnetic deflection. Sylvania specifies approximately 25 kV operation for rapid electronic printing applications.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- DUODECAL12
- Base pins
- -
- Nominal heater
- 6.3 V / 600 mA
Description
High-speed electrostatic-charge printing CRT with magnetic focus and magnetic deflection.
Socket description
Duodecal 12-contact color CRT base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- DUODECAL12
- 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
- 25000 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
600 mA
Focusing method
Magnetic
Deflection method
Magnetic
Horizontal deflection angle
52 deg
Other
Maximum principal anode/accelerator voltage
25000 V
Anode voltage maximum
25000 V
Grid1 negative voltage maximum
-155 V
Heater voltage minimum
5.7 V
Heater voltage maximum
6.9 V
Heater-cathode voltage maximum
200 V
Typical anode voltage
10000 V
Typical grid2 voltage
500 V
Grid1 cutoff range
-40 to -77 V
Focus-coil current
50 mA
Application
Application
High-speed electrostatic-charge printing CRT
Construction
Printing array width
8.6 in
Capacitance
Cathode-to-all capacitance
5 pF
Grid1-to-all capacitance
8 pF