Data set 01
1959 Ediswan
Published operating points and test conditions from this source.
SECTION 1
Triode
Application
Application
Oscillator
SECTION 2
Pentode
Application
Application
VHF frequency changer / mixer
Voltage Radio Detector Converter ·Pentode-Triode
9EN7
Triode-pentode for VHF frequency-changer service in AC/DC television receivers.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 9 V / 300 mA
Description
Triode-pentode for VHF frequency-changer service in AC/DC television receivers.
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
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 9 V
- Nominal heater current
- 300 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
2 physical sections, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Amplification factor
- 20
- Max plate dissipation
- 1.5 W
Published source ratings and characteristics promoted where applicable; additional data retained as parameters.
Section 2
Pentode
X-ray radiationInterelectrode capacitances
- Max plate dissipation
- 1.7 W
Published source ratings and characteristics promoted where applicable; additional data retained as parameters.
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.