Specialized - Cathode Ray ·CathodeRay
Compact Cintel electrostatic cathode-ray instrument tube with electrostatic focusing and deflection, operating at up to about 4 kV final-anode voltage and a small precision display screen.
3ED2 is a oscilloscope tube using electrostatic focus and electrostatic deflection. The datasheet publishes heater data, screen characteristics, electrode capacitances, maximum ratings, and representative operating conditions.
Magnal 11-contact 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
No fixed ratings are recorded for this section.
CRT maximum electrode voltage promoted where published; screen, focusing, deflection, capacitance and operating data preserved as parameters.
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.
Heater voltage
6.3 V
Heater current
600 mA
Focusing method
Electrostatic
Deflection method
Electrostatic
Screen fluorescence
Blue
Screen persistence
Long
Minimum useful screen diameter
69 mm
Base
11 Pin Magnal.
Modulator capacitance
11 pF
InterelectrodeCapacitance
X plate capacitance
11 pF
InterelectrodeCapacitance
Y plate capacitance
11 pF
InterelectrodeCapacitance