Specialized - Cathode Ray ·CathodeRay
11DP4
11DP4 11-inch rectangular monochrome television CRT with electrostatic focus, 110-degree magnetic deflection, non-ion-trap gun and aluminized P4 white screen.
- Sections
- 1
- Base
- 8HR
- Socket code
- -
- Base pins
- 8
- Nominal heater
- 6.3 V / 150 mA
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 8HR
- Socket code
- -
- Base pins
- 8
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 150 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
8HR - 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
- Max plate voltage
- 15000 V
- Max screen voltage
- 60 V
11DP4 CRT: anode max 15000 V, min 9000 V; grid2 accelerator range 25–60 V, grid4 electrostatic focusing electrode -500 to +1000 V. Typical Va 11000 V, grid2 50 V, grid4 0 V, cathode +31 to +49 V relative to grid1 for visual cutoff. Heater-cathode ±200 V normally, heater-negative 450 V for <=15 s warm-up. Grid1 circuit resistance max 1.5 MΩ. Electrostatic focus, magnetic deflection 110° diagonal, 99° horizontal, 82° vertical. P4 aluminized white screen, non-ion-trap electron gun. Capacitances cathode-to-other 5 pF, grid1-to-other 6 pF, coating-to-anode 500–750 pF.
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.