Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Cathode Ray
Characteristic
Phosphor
P11
Focusing Method
Magnetic
Deflecting Method
Magnetic
Specialized - Cathode Ray ·CathodeRay
SC2782
Five-inch high-resolution photographic-recording CRT with magnetic focusing and deflection and an extremely fine-grain P11 screen. Sylvania designed it for precision photographic capture of detailed traces.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- DUODECAL5
- Base pins
- -
- Nominal heater
- 6.3 V / 600 mA
Description
The Sylvania SC2782 is a 5-inch high-resolution photographic-recording CRT with magnetic focus and deflection and an extremely fine-grain P11 screen.
Socket description
Small-shell Duodecal 5-contact CRT base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- DUODECAL5
- 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
No fixed ratings are recorded for this section.
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
Deflection Angle
50 deg
Approximate
Phosphor
Fine Grain Aluminized P11 text
Fluorescence
Blue text
Persistence
Short text
Line Width
0.001 in
HighResolution
Other
Maximum Anode Voltage
25000 V
Maximum Grid2 Voltage
2500 V
Maximum Grid1 Negative Bias
150 V
Maximum Heater-Cathode Voltage During Warmup
450 V
Maximum Heater-Cathode Voltage After Warmup
165 V
Anode Voltage
20000 V
PhotographicRecording
Grid2 Voltage
2000 V
PhotographicRecording
Grid1 Cutoff Voltage Minimum
-77 V
Grid1 Cutoff Voltage Maximum
-33 V
Focusing Coil Current
100 mA
Approximate
Maximum Grid1 Circuit Resistance
1.5 Mohm