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Power - Pentode (NOT beam) ·Pentode

EL2

Receiving-type power pentode for conventional audio-frequency output amplification.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
SideContact
Socket code
P8A
Base pins
8
Nominal heater
6.3 V / 200 mA

Description

EL2 is listed in the supplied valve table as a power pentode. Published operating and characteristic values were transcribed from its target row.

Socket description

European 8-pin side-contact base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
SideContact
Socket code
P8A
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
200 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

SideContact - 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
Plate resistance
70000 Ω
Transconductance
0.008 S
Max plate voltage
550 V

Reference/equivalence sheet; characteristics not reproduced. Values were not imported from EL32.

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

1938 Philips Miniwatt Vacuum Tube Catalog

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate voltage

    250 V

    Published table operating point

  • Screen voltage

    250 V

    Published table operating point

  • Plate current

    32 mA

    Published table operating point

  • Control-grid bias

    18 V

    Published table operating point

  • Power output

    3.6 W

    Published table operating point

Characteristic

  • Plate resistance

    70000 ohm

    Published table characteristic

  • Transconductance

    8000 µS

    Published table characteristic

  • Heater/filament voltage

    6.3 V

    Published heater/filament rating

  • Heater/filament current

    200 mA

    Published heater/filament rating

Data set 02

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • betrigt

    2.8 mA/V

  • Heizspannung . . . . . « « « « « « v v v v oo .. V

    63 V

  • von 200 und

    250 V

  • Ausgangsleistung fiir 10 %/, Verzerrung . . . . W,

    3.6 W

  • Gitterwechselspannung fitr 10 %/, Verzerrung . Vi

    10 V

  • Gitterwechselspannung fiir

    50 mW

  • Schirmgitterruhestrom . . . Iy2o

    2 X 4.4 mA

  • Schirmgitterstrom bei voller Aussteuerung Iz max

    2 X 8.0 mA

  • Grofite Ausgangsleistung. . Womax

    81 W

  • — /

    -9 V

  • e ' e

    30 V

  • 300 400 500 600 meter fiir Vg,

    250 V

  • spannung bei Ve = 200 und

    250 V

  • Grenzwert des Gltterstromemsatzpunkteb Vé.1 (Ig1 [1]

    0.3 pA

  • Grenzwert des Gltterstromemsatzpunkteb Vé.1 (Ig1 [2]

    1.3 V

  • (Gleichsp. oder Effektivwert der Wechselsp.) Vi = max

    100 V

  • HI T;A T Ve = Vg2

    250 V

    PushPull

  • ! T

    2 ma

    PushPull

  • Va x Vg2

    250 V

  • Va = Vg,

    250 V

    PushPull

  • I,

    32 mA

  • T,

    32 mA

Other

  • Anodenspannung. . . . . . . . ... ... Ve

    250 V

    OneTube

  • Schirmgitterspannung. . . . . . . . . . . . Vg

    250 V

    OneTube

  • Negative Gittervorspannung. . . . . . . . . Vg = —

    18 V

    OneTube

  • Anodenstrom . . . . . . ... ... ...Is

    32 mA

    OneTube

  • Schirmgitterstrom . . e v v oo oo oIz

    5 mA

    OneTube

  • Steilheit im Arbeltspunkt e

    2.8 mA/V

    OneTube

  • Anodenspannung . . . . . . . . ...V,

    250 V

    PushPull;TwoTubes

  • Schirmgitterspannung . . . Ve

    250 V

    PushPull;TwoTubes

  • Anodenstrom . . I PP

    2 X 27.5 mA

    PushPull;TwoTubes

  • Anodenstrom bei voller Aussteuerung . Jamax

    2 X 32 mA

    PushPull;TwoTubes

  • nung . Ve [1]

    250 V

    TriodeConnection

  • nung . Ve [2]

    250 V

    TriodeConnection

  • Negative Glttervorspannung Vg [1]

    271 V

    TriodeConnection

  • Negative Glttervorspannung Vg [2]

    20 V

    TriodeConnection

  • Anodenstrom I [1]

    15 mA

    TriodeConnection

  • Anodenstrom I [2]

    30 mA

    TriodeConnection

  • Steilheit im Arbeltspunkt § [1]

    17 mA/V

    TriodeConnection

  • Steilheit im Arbeltspunkt § [2]

    2.6 mA/V

    TriodeConnection

  • Maximale Anodenkaltspannung . Vao = max

    550 V

  • Maximale Anodenspannung. . Va = max,

    250 V

  • Maximale Anodendauerbelastung . Wa -: max

    8 W

  • Maximale Schirmgitterkaltspannung . Ve == max

    550 V

  • Maximale Schirmgitterspannung Vs = max

    250 V

  • Maximale Schirmgitterdauerbelastung . W, = max

    1.6 W

  • Maximaler Kathodenstrom . . . R = max

    45 mA

Capacitance

  • o1 SRt A

    2 pF

  • von 25 oder

    50 uF

  • und Ve = Vg,

    250 V