Data set 01
1960 Mazda
Published operating points and test conditions from this source.
SECTION 1
Diode
Other
MaximumFilamentCurrent
900 mA
Diode (NOT rectifier) ·Diode
78A
Special directly heated educational diode designed to demonstrate anode-current saturation without damaging the cathode.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- B9A
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 14 V / 900 mA
Description
Special directly heated teaching diode designed to demonstrate anode-current saturation without damaging the cathode.
Socket description
Small-button Noval 9-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- B9A
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 14 V
- Nominal heater current
- 900 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
B9A - 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
Diode
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 110 V
Published ratings and characteristics promoted where clearly stated; identical repeated sections compressed when applicable.
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
1968 Mazda Belvu
Published operating points and test conditions from this source.
SECTION 1
Diode
Characteristics
Heater or filament voltage
14 V
Published nominal value
Heater or filament current
900 mA
Published nominal value
Filament current range
0 mA to 900 mA
Teaching operation
Filament voltage range
0 to 14 V
Teaching operation