Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Cathode Ray
Characteristic
Heater Voltage
6.3 V
Heater Current
300 mA
Other
Maximum Anode Voltage
22000 V
Grid2 Voltage
700 V
Specialized - Cathode Ray ·CathodeRay
23DHP4
Twenty-three-inch direct-view monochrome television picture tube with electrostatic focusing, magnetic deflection, and high-voltage operation. Manufacturer data documents its large-screen receiver-display construction, optical characteristics, and picture-tube operating limits.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- 8HR
- Socket code
- DUODECAL5
- Base pins
- -
- Nominal heater
- 6.3 V / 300 mA
Description
23-inch 110-degree monochrome television CRT with electrostatic focus, magnetic deflection, and aluminized P4 screen.
Socket description
Small-shell Duodecal 5-contact CRT base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 8HR
- Socket code
- DUODECAL5
- Base pins
- -
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 300 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
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 22000 V
- Max screen voltage
- 700 V
High-voltage CRT ratings promoted from source. Sylvania source includes X-ray radiation precautions/warning.
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.
Data set 02
1965 Sylvania Electronic Tubes Vol3
Published operating points and test conditions from this source.
SECTION 1
Cathode Ray
Characteristics
Focusing method
Electrostatic
Deflection method
Magnetic
Heater voltage
6.3 V
Heater current
300 mA
Diagonal deflection angle
110 deg
Heater warm-up time
11 s
Construction
Phosphor
Aluminized P4
Other
Maximum anode voltage
22000 V
Grid1 circuit resistance maximum
1.5 Mohm
Anode voltage minimum
12000 V
Typical anode voltage
16000 V
Typical focus-electrode voltage
0 to 400 V
Typical grid2 voltage
400 V
Focus-electrode voltage minimum
-550 V
Focus-electrode voltage maximum
1100 V
Heater-cathode voltage maximum
200 V
Grid2 voltage maximum
700 V
Application
Application
Monochrome television picture display
Capacitance
Cathode-to-all capacitance
5 pF
Grid1-to-all capacitance
6 pF