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
SC3821
Special-purpose CRT with electrostatic focusing, magnetic deflection, and a P14 screen. Its long-persistence display construction supports retained electronic information presentation.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- DUODECAL6
- Base pins
- -
- Nominal heater
- 6.3 V / 600 mA
Description
Sylvania SC3821 special-purpose CRT with electrostatic focus and magnetic deflection; P14. Published high-voltage ratings, focus/deflection data, capacitances, circuit limits, and typical operating conditions were extracted from the supplied datasheet.
Socket description
Small-shell Duodecal 6-contact CRT base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- DUODECAL6
- 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
- 13200 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
Characteristic
Heater Voltage
6.3 V
Heater Current
600 mA
FocusingMethod
Electrostatic
DeflectionMethod
Magnetic
PhosphorOrScreen
P14
UsefulScreenOrScan
special-purpose display
Grid1 To All Capacitance
8 pF
Cathode To All Capacitance
6 pF
Other
AnodeVoltageMaximum
13200 V
Grid1NegativeBiasMagnitudeMaximum
220 V
Grid1PositiveBiasMaximum
0 V
Grid1PositivePeakVoltageMaximum
2 V
Grid1CircuitResistanceMaximum
1.5 Mohm
HeaterCathodeVoltageMaximum
200 V
AfterWarmup
Grid2VoltageTypical
300 V
FocusElectrodeVoltageMinimum
-550 V
FocusElectrodeVoltageMaximum
1100 V
Grid2VoltageMaximum
770 V
Anode Voltage
10000 V
FocusElectrodeVoltage
0 to +300 V
Grid1VoltageForCutoff
-30 to -75 V
LineWidth
0.01 in