Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Cathode Ray
Other
Anode2Grid3MaximumVoltage
8000 V
CRT
Anode4MaximumVoltage
2400 V
CRT
Anode2Dissipation
6 W
Specialized - Cathode Ray ·CathodeRay
7DP4
Seven-inch direct-view television CRT with electrostatic focusing, magnetic deflection, external conductive coating, and a double-field ion trap. Its anode operates to approximately 8 kV.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- OCTALCRT8
- Base pins
- 8
- Nominal heater
- 6.3 V / 600 mA
Description
The 7DP4 is a seven-inch direct-view television CRT using electrostatic focusing, magnetic deflection, an external conductive coating and a double-field ion trap.
Socket description
Octal 8-contact CRT base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- OCTALCRT8
- Base pins
- 8
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 600 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
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
- 8000 V
- Max screen voltage
- 450 V
- Rectifier max heater-cathode voltage
- 450 V
Published promoted fields populated by semantic heading; identical repeated physical sections compressed.
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
1966 Tung Sol Electronic Tubes 4 of 4
Published operating points and test conditions from this source.
SECTION 1
Cathode Ray
Characteristic
Cathode to other electrodes capacitance
5 pF
WholeTube
Grid 1 to other electrodes capacitance
6 pF
WholeTube
External coating to anode capacitance maximum
1500 pF
WholeTube
External coating to anode capacitance minimum
400 pF
WholeTube
Heater Voltage
6.3 VOLTS
PublishedTable
Heater Current
0.6 AMP
PublishedTable
Oc Negative — Bias Value
5 VOLTS
PublishedTable
Heater
0 VOLTS
PublishedTable
Dc Grid #2 Voltage
25 VOLTS
PublishedTable
Anode #1 Voltage For
1 VOLTS
PublishedTable
Dc Grid #I Voltage C
63 VOLTS
PublishedTable
Other
Anode 2 / grid 3 voltage
6000 V
WholeTube
Grid 2 voltage
250 V
WholeTube
Maximum Dc Anode #2> Grid #3 Voltage A
0 VOLTS
PublishedTable
Maximum Dc Anode #1 Voltage
400 VOLTS
PublishedTable
Maximum Oc Grid #2 Voltage
4 VOLTS
PublishedTable