Data set 01
1959 Rogers
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
HeaterOrFilamentVoltage
32 V
HeaterOrFilamentCurrent
150 mA
Power - Pentode (NOT beam) ·Pentode-Triode
32A8
Combination triode-pentode with a triode for audio-frequency amplification and a power pentode for output service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- E9-1
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 32 V / 150 mA
Description
Triode-pentode; triode for AF amplification and pentode for output service.
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
- E9-1
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 32 V
- Nominal heater current
- 150 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
E9-1 - Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
2 physical sections, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.0025 S
- Amplification factor
- 70
- Max plate voltage
- 250 V
- Max plate dissipation
- 1 W
- Max cathode current
- 15 mA
Published ratings and characteristics promoted from the supplied Rogers/Rogers Majestic source.
Section 2
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 15000 Ω
- Transconductance
- 0.0068 S
- Max plate voltage
- 250 V
- Max screen voltage
- 250 V
- Max plate dissipation
- 7 W
- Max screen dissipation
- 1.8 W
- Max cathode current
- 50 mA
Published ratings and characteristics promoted from the supplied Rogers/Rogers Majestic source.
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
1963 Hitachi
Published operating points and test conditions from this source.
SECTION 1
Triode
Capacitance
Interelectrode capacitances published
1
See source table