Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Cathode Ray
Other
Maximum Plate Voltage
25000 V
Characteristic
Focusing Method
Magnetic
Deflecting Method
Magnetic
Specialized - Cathode Ray ·CathodeRay
SC2795
High-speed electrostatic-charge printing cathode-ray tube using a fine wire-array target. Sylvania specifies high-voltage operation to approximately 25 kV for rapid electronic printing rather than visual display.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- DUODECAL12
- Base pins
- -
- Nominal heater
- 6.3 V / 600 mA
Description
The Sylvania SC2795 is a high-speed electrostatic-charge printing cathode-ray tube using a fine wire-array target.
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
Published ratings and characteristics promoted semantically from the approved source.
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 text
Deflection Method
Magnetic text
Horizontal Deflection Angle
24 deg
Approximate
Cathode-to-All Capacitance
5 pF
Grid1-to-All Capacitance
8 pF
Printing Array Width
2.75 in
Printing Array Height
0.16 in
Conductive Element Diameter
0.001 in
Conductive Element Spacing
0.004 in
Approximate
Other
Maximum Anode Voltage
25000 V
Maximum Grid2 Voltage
700 V
Maximum Grid1 Negative Bias
155 V
Maximum Grid1 Negative Peak
200 V
Maximum Heater Voltage
6.9 V
Minimum Heater Voltage
5.7 V
Maximum Heater-Cathode Voltage
200 V
EitherPolarity
Anode Voltage
20000 V
GridDrive
Grid2 Voltage
300 V
GridDrive
Grid1 Cutoff Voltage Minimum
-77 V
Grid1 Cutoff Voltage Maximum
-40 V
Focusing Coil Current
70 mA
±10mA