Specialized - Cathode Ray ·CathodeRay
Special-purpose high-resolution CRT with magnetic focusing and deflection and a P11 blue short-persistence fiber-optic screen, designed for efficient optical coupling and fast image presentation.
Sylvania SC3507 special-purpose CRT with magnetic focus and magnetic deflection; P11 blue short-persistence fiber-optic. Published high-voltage ratings, focus/deflection data, capacitances, circuit limits, and typical operating conditions were extracted from the supplied datasheet.
Small-shell Duodecal 5-contact CRT base
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
Special-purpose cathode-ray tube; published ratings and construction data captured.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Focusing method
Magnetic
Deflection method
Magnetic
Application
Electrostatic charge printing
Fiber optics faceplate
Yes
Data set 02
Published operating points and test conditions from this source.
Heater Voltage
6.3 V
Heater Current
600 mA
FocusingMethod
Magnetic
DeflectionMethod
Magnetic
PhosphorOrScreen
P11 blue short-persistence fiber-optic
UsefulScreenOrScan
8.5 x 0.5 inch fiber-optic
Grid1 To All Capacitance
8 pF
Cathode To All Capacitance
6 pF
AnodeVoltageMaximum
25000 V
Grid1NegativeBiasMagnitudeMaximum
150 V
Grid1PositiveBiasMaximum
0 V
Grid1PositivePeakVoltageMaximum
0 V
Grid1CircuitResistanceMaximum
1.5 Mohm
HeaterCathodeVoltageMaximum
200 V
AfterWarmup
Grid2VoltageTypical
2000 V
Anode Voltage
20000 V
Grid1VoltageForCutoff
-33 to -77 V