Data set 01
1958 Compagnie General
Published operating points and test conditions from this source.
SECTION 1
Cathode Ray
Characteristic
Heater Voltage
6.3 V
Heater Current
600 mA
Specialized - Cathode Ray ·CathodeRay
7ABP19A
Seven-inch radar-display CRT with electrostatic focusing, magnetic deflection, and a P19 orange long-persistence screen for retained radar traces and echoes.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- DUODECAL6
- Base pins
- -
- Nominal heater
- 6.3 V / 600 mA
Description
Sylvania seven-inch CRT with electrostatic focus, magnetic deflection, and P19 orange, long persistence. Published electrical ratings, capacitances, and operating conditions were extracted from the supplied datasheet.
Socket description
Small-shell Duodecal 6-contact CRT base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- DUODECAL6
- Base pins
- -
- 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
- 11000 V
Published ratings and characteristics promoted from the supplied CSF/Thomson source where explicitly available.
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
Characteristic
Heater Voltage
6.3 V
Heater Current
600 mA
FocusingMethod
Electrostatic
DeflectionMethod
Magnetic
Deflection Angle
39 degree
Phosphor
P19 orange, long persistence
MinimumUsefulScreen
6 in
Cathode To All Capacitance
5 pF
Grid1 To All Capacitance
6 pF
Other
Grid1CircuitResistanceMaximum
1.5 Mohm
AnodeVoltageMaximum
11000 V
FocusElectrodeVoltageMinimum
-550 V
FocusElectrodeVoltageMaximum
1100 V
Grid2VoltageMaximum
770 V
Grid1NegativeBiasMagnitudeMaximum
200 V
HeaterCathodeVoltageMaximum
200 V
Anode Voltage
7000 V
FocusElectrodeVoltage
0 to 250 V
Grid2 Voltage
300 V
Grid1VoltageForCutoff
-28 to -72 V