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Power - Beam (NOT sweep) ·BeamPower

EL90

Indirectly heated power-output tube intended for audio-frequency output-amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B7G
Base pins
7
Nominal heater
6.3 V / 450 mA

Description

Indirectly heated power output tube intended for AF output-amplifier service.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B7G
Base pins
7
Nominal heater voltage
6.3 V
Nominal heater current
450 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

Beam Power

X-ray radiationInterelectrode capacitances
Plate resistance
52000 Ω
Transconductance
0.0041 S
Max plate voltage
250 V
Max screen voltage
250 V
Max plate dissipation
12 W
Max screen dissipation
2 W

Published ratings/characteristics promoted from source tables.

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

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • ËELVU Amplificateur de sortie A.F

    6 A

  • Tension filAment ….………uesemeennnennennnnsnnnnnennn V

    6.3 V

  • Heater current

    450 mA

  • Plate voltage ………..…..…....….+…scorsrernsoncene V

    250 V

  • Tension de grille n°2.........…..….….….…-0cecccceceees VEZ

    250 V

  • Plate dissipation ……s Pä

    12 W

  • Dissipation de grille n°2 ...c PE

    2 W

  • Tension entre filament et cathode …… Vfk

    90 V

  • Tension d'Anod@ …… reseroonceseverereensecces VA 180

    250 V

  • Screen-grid voltage............………usccécsrerecereseuss VEZ 180

    250 V

  • Tension de grille n° 1…c VEI -8,5

    -12.5 V

  • Tension de crête d'entrée …… Ve CI 8,5

    12.5 V

  • Plate current à signal nul. ……………….…… Iasigo 29

    45 mA

  • Plate current à signal max……… . . Iasigmax 30

    47 mA

  • Courant de grille n°2 à signal nul . . Ig,sigo 3

    4.5 mA

  • Courant de grille n°2 à signal max … … Ig,sigmax 4

    7 mA

  • Plate resistance ……s P 58

    52 kΩ

  • Transconductance …… cevsemescrereeee S 3,7

    4.1 mA/V

  • Résistance de charge danode vrésrrocceerermree R 5,5

    5 kΩ

  • Puissance de sortie à 51gnalmax …… Pssigmax 2

    4.5 W

  • Plate voltage …… ……c VA

    250 V

  • Tension de grille n°2 _..………corerssereserasens VBZ

    250 V

  • Tension de grille n° 1… VE1

    -15 V

  • Tension de crête d'entrée …… VeCT

    30 V

  • Plate current à signal nul… … Ia sig o

    70 mA

  • Plate current à signal max…… … Iasig max

    79 mA

  • Courant de grille n° 2 à signal nul … … lg, sigo

    5 mA

  • Courant de grille n° 2 à signal max ……………. Ig, sig max

    13 mA

  • Résistance de charge d anodeàanode Raa

    10 kΩ

  • Puissance de sortie ……s PS

    10 W

Characteristic

  • Capacitance de sortie …… … Cs

    6 pF

    InterelectrodeCapacitance

  • Capacitance grille n° 1/ anode Cg,/a ;

    0.35 pF

    InterelectrodeCapacitance

  • Capacitance d'Entrée …….…...………neerrsernsenceensenitareneennssesenes Ce

    8 pF

    InterelectrodeCapacitance

  • Capacitance de sortie …… . .… Cs

    11 pF

    InterelectrodeCapacitance

  • Capacitance grille n°1 /anode ............................................ Cg,/a

    0.17 pF

    InterelectrodeCapacitance