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Voltage Pentode - Remote Cutoff (single) ·Pentode

EF9

Variable-transconductance pentode for RF/IF amplification and resistance-coupled audio service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 200 mA

Description

Variable-transconductance pentode for RF/IF and resistance-coupled AF amplification.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
200 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 1

Pentode

X-ray radiationInterelectrode capacitances
Transconductance
0.0022 S
Max plate voltage
300 V

Variable-transconductance pentode for RF/IF and resistance-coupled AF amplification.

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

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Heater voltage

    6.3 V

    Heating

  • Heater current

    200 mA

    Heating

  • Maximum plate voltage

    300 V

    Promoted published datasheet value

  • Max. Schirmgitterspannung bei I, =

    6 mA

    Limiting values

Characteristic

  • Transconductance

    2200 µS

    Promoted published datasheet value

  • V2 =

    250 V

    Published datasheet value

  • dagegen bei V1 = —

    3 V

    Published datasheet value

  • I./V;1-Kennlinie fiir Vg2 =

    115 V

    Published datasheet value

  • Vg2 =

    100 V

    Published datasheet value

  • bei Va =

    100 V

    Published datasheet value

  • Anodenspannung . . . . . . . 0 00 e e e e e Vo =

    250 V

    Published datasheet value

  • Fanggitterspannung . . . . « . . « « « « .« . . . Vg =

    0 V

    Published datasheet value

  • Schirmgitterspannung . . . . . . . . Vgz =

    100 V

    Published datasheet value

  • Anodenstrom . . . . . . . . . . . . I, =

    6 mA

    Published datasheet value

  • Schirmgitterstrom . . . . . . . . . . Iz =

    1.7 mA

    Published datasheet value

  • Anodenspannung . . . . . 0 . ... 0 e . e Vo =

    200 V

    Published datasheet value

  • Fanggitterspannung . . . . . . . . . . . . . . . Vs =

    0 V

    Published datasheet value

  • Schirmgitterspannung . . . . . . . . Viz =

    100 V

    Published datasheet value

  • Anodenstrom . . . . . . . . . . . . Iz =

    6 mA

    Published datasheet value

  • Anodenspannung . . . . . . .. ... .. .. . Vo =

    100 V

    Published datasheet value

  • Schirmgitterspannung . . . . . . . . . . .. . . Vez =

    100 V

    Published datasheet value

  • Neg. Gittervorspannung . . . . . . . Ve = —

    2.5 V

    Published datasheet value

  • Anodenstrom . . . . . . .. .. .. I, =

    6 mA

    Published datasheet value

  • s o T e =

    18 W

    Published datasheet value