Specialized - Cathode Ray ·CathodeRay
10BP4D
Sheldon 10BP4D 10-inch monochrome television CRT with magnetic focus and deflection, ion-trap gun, metal-backed P4 white screen, 6.3 V 0.6 A heater.
- Sections
- 1
- Base
- 12D
- Socket code
- -
- Base pins
- 12
- Nominal heater
- 6.3 V / 600 mA
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 12D
- Socket code
- -
- Base pins
- 12
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 600 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
12D - 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
- 10000 V
- Max screen voltage
- 410 V
10BP4D CRT: maximum second-anode 10000 V DC, grid2 410 V DC, grid1 negative bias magnitude 125 V, positive grid1 peak 2 V, heater-cathode +/-125 V. Typical anode 9000 V, grid2 250 V, visual grid1 cutoff -27 to -83 V. Grid1 circuit resistance max 1.5 MΩ. Magnetic focusing (110 mA focus coil typical), magnetic deflection ~50 degrees, ion-trap magnet ~85 mA. P4 white metal-backed screen; minimum useful diameter 9 in. Capacitances cathode-to-other 5 pF, grid1-to-other 8 pF, external coating-to-anode2 500–2500 pF. Separate second-anode bulb cap J1-21.
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.