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9EF6

Beam-power pentode designed specifically as a vertical-deflection amplifier in wide-angle television receivers.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: NOVAL
Socket code: B8G
Base pins: 8
Nominal heater: 9.4 V / 600 mA

Description

Beam power pentode designed for vertical-deflection amplifier service in wide-angle television receivers. The supplied Tung-Sol datasheet was used for construction, heater, ratings, characteristics, and intended-service information.

Socket description

Loctal 8-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: NOVAL
Socket code: B8G
Base pins: 8
Nominal heater voltage: 9.4 V
Nominal heater current: 600 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

NOVAL - 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

Beam Power

X-ray radiationInterelectrode capacitances

Transconductance: 0.005 S
Max plate voltage: 250 V
Max screen voltage: 250 V
Max plate dissipation: 10 W
Max screen dissipation: 2 W
Max cathode current: 60 mA

60-mA average cathode-current rating promoted; 180-mA peak cathode and 2000-V pulse plate ratings 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.

Data set 01

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Heater voltage
9.4 V
Heater current
600 mA
Peak positive pulse plate voltage
2000 V
VerticalDeflection
Peak cathode current
180 mA
VerticalDeflection
Heater warm-up time approximate
11 s

Capacitance

Grid-to-plate capacitance
0.8 pF

Data set 02

1966 Tung Sol Electronic Tubes 2 of 4

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Peak Positive Pulse Plate Voltage
2000 V
VerticalDeflection
Peak Cathode Current
180 mA
VerticalDeflection
Plate Voltage
250 V
Screen Voltage
250 V
Grid 1 Voltage
-18 V
Plate Current
50 mA
Screen Current
2 mA

Characteristics

Plate Current at Eb=75V Ec2=250V Ec1=0
170 mA
Instantaneous
Screen Current at Eb=75V Ec2=250V Ec1=0
17 mA
Instantaneous