Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Cathode Ray
Other
HeaterVoltageNominal
6.3 V
Nominal
HeaterCurrentNominal
600 mA
Nominal
PostAcceleratorVoltage
10000 V
Oscilloscope
Specialized - Cathode Ray ·CathodeRay
7AYP1
Seven-inch P1 cathode-ray instrument tube for oscillographic or measurement display, with manufacturer-specified focusing, deflection, accelerating-voltage, and phosphor characteristics.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- DIHEPTAL12
- Base pins
- 12
- Nominal heater
- 6.3 V / 600 mA
Description
Sylvania seven-inch CRT with electrostatic focus, electrostatic deflection, and P1 green, medium persistence. Published electrical ratings, capacitances, and operating conditions were extracted from the supplied datasheet.
Socket description
Medium-shell Diheptal 12-contact CRT base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- DIHEPTAL12
- Base pins
- 12
- 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
Electrostatic oscilloscope CRT; post-accelerator max 16000 V.
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
Electrostatic
Phosphor
P1 green, medium persistence
MinimumUsefulScreen
4.75 x 5.75 in
DeflectionFactorUniformityMaximum
3 %
LineWidthMaximum
0.3 mm
Other
Grid1CircuitResistanceMaximum
1.5 Mohm
PostAcceleratorVoltageMaximum
16000 V
AnodeVoltageMaximum
8000 V
PostAcceleratorToAnodeVoltageRatioMaximum
2
FocusElectrodeVoltageMaximum
2500 V
Grid1NegativeBiasMagnitudeMaximum
200 V
HeaterCathodeVoltageMaximum
180 V
PeakVoltageAnodeToDeflectionPlate
1500 V
PostAcceleratorVoltage
10000 V
Anode Voltage
5000 V
FocusElectrodeVoltage
1375 to 1875 V
Grid1VoltageForCutoff
-50 to -90 V
DeflectionFactorD1D2
125 to 150 V/in
DeflectionFactorD3D4
100 to 125 V/in
DeflectionCircuitResistanceMaximum
3 Mohm