Data set 01
1960 Mazda
Published operating points and test conditions from this source.
SECTION 0
Cathode Ray
Other
Maximum first-anode voltage
500 V
Maximum second-anode voltage
1000 V
Maximum third-anode voltage
4000 V
Specialized - Cathode Ray ·CathodeRay
30C9
Seven-inch all-electrostatic cathode-ray tube for measurement applications. Mazda and AEI documentation identify a laboratory and industrial instrument display using electrostatic focusing and deflection.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- 12
- Nominal heater
- 4 V / 720 mA
Description
All-electrostatic 7-inch cathode-ray tube for measurement use.
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- -
- Base pins
- 12
- Nominal heater voltage
- 4 V
- Nominal heater current
- 720 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 0
Cathode Ray
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
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
1961 AEI Industrial Valves
Published operating points and test conditions from this source.
SECTION 0
Cathode Ray
Other
MaximumFirstAnodeVoltage
500 V
MaximumSecondAnodeVoltage
1000 V
MaximumThirdAnodeVoltage
4000 V
TypicalThirdAnodeVoltage
2200 V
TypicalSecondAnodeVoltageForFocus
440 V
TypicalFirstAnodeVoltage
450 V
GridBiasForCutoff
-90 to -30 V
Capacitance
X1ToAllCapacitance
14.6 pF
X2ToAllCapacitance
14 pF
Y1ToAllCapacitance
14.9 pF
Y2ToAllCapacitance
13.8 pF
X1ToX2Capacitance
4.5 pF
Y1ToY2Capacitance
4.4 pF
GridToAllCapacitance
8.6 pF
Data set 03
1961 Associated Electrical Industries
Published operating points and test conditions from this source.
SECTION 0
Cathode Ray
Other
MaximumFirstAnodeVoltage
500 V
MaximumSecondAnodeVoltage
1000 V
MaximumThirdAnodeVoltage
4000 V
TypicalThirdAnodeVoltage
2200 V
TypicalSecondAnodeVoltageForFocus
440 V
TypicalFirstAnodeVoltage
450 V
GridBiasForCutoff
-90 to -30 V
Capacitance
X1ToAllCapacitance
14.6 pF
X2ToAllCapacitance
14 pF
Y1ToAllCapacitance
14.9 pF
Y2ToAllCapacitance
13.8 pF
X1ToX2Capacitance
4.5 pF
Y1ToY2Capacitance
4.4 pF
GridToAllCapacitance
8.6 pF