Specialized - Cathode Ray ·CathodeRay
Philips high-vacuum oscillography CRT with electrostatic beam control and a long-persistence display screen. The persistent trace is intended for measurements where waveforms must remain visible after the writing beam passes.
The Philips DN95 is a high-vacuum post-acceleration oscillography crt with persistent.
Duodecal 12-contact
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
High-vacuum CRT with post-acceleration electrode, electrostatic focusing, and double electrostatic deflection. Screen variant: persistent.
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
4 V
Heater Current
1 A
Phosphor Variant
persistent text
Screen fluorescence and persistence
Post-Acceleration Electrode
Present text
Data set 02
Published operating points and test conditions from this source.
Capacitances Cg
8 pF
Capacitances Cg = 8 pF CD2 = 10 pF
Capacitances Cg
10 pF
Capacitances Cg = 8 pF CD2 = 10 pF
Line width (Va
1000 V
Line width (Va3 = 1000 V)
Post-deflection acceleration present
1
Source explicitly describes post-deflection acceleration
Data set 03
Published operating points and test conditions from this source.
Post-acceleration anode voltage
5000 V
Anode voltage
1000 V
Auxiliary anode voltage
310 V
Deflection sensitivity pair 1
0.18 mm/V
Deflection sensitivity pair 2
0.15 mm/V
Writing speed
240 km/s
Grid-cathode capacitance
7.5 pF
Deflection plate capacitance pair 1
1.5 pF
Deflection plate capacitance pair 2
2 pF