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Power - Pentode (NOT beam) ·Diode-Diode-Pentode

EBL1

Combination valve incorporating a power-output pentode with diode or triode sections for audio-frequency amplification, detection, or driver service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
3
Base
-
Socket code
SIDE8
Base pins
8
Nominal heater
6.3 V / 1.5 A

Description

EBL1 is listed in the supplied valve table as a duodiode high-sensitivity power pentode. Published operating and characteristic values were transcribed from its target row.

Socket description

European side-contact 8-contact base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
SIDE8
Base pins
8
Nominal heater voltage
6.3 V
Nominal heater current
1.5 A
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

3 physical sections, each with unique specifications.

Section 1

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Published target-row operating and characteristic values reviewed.

Section 2

Diode

X-ray radiationInterelectrode capacitances
Max plate voltage
200 V
Rectifier nominal output current
0.8 mA

Published target-row operating and characteristic values reviewed.

Section 3

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
50000 Ω
Transconductance
0.0043 S
Amplification factor
9
Max plate voltage
250 V
Max screen voltage
250 V
Max plate dissipation
9 W
Max screen dissipation
1.5 W
Max cathode current
55 mA

Published target-row operating and characteristic values reviewed.

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 3

Pentode

Other

  • Plate voltage

    250 V

    Published European table row

  • Screen voltage

    250 V

    Published European table row

  • Plate current

    36 mA

    Published European table row

  • Power output

    3.6 W

    Published European table row

Characteristic

  • Plate resistance

    50000 ohm

    Published European table row

  • Transconductance

    4300 µS

    Published European table row

  • Amplification factor

    9

    Published European table row

  • Heater/filament voltage

    6.3 V

    Published European table row

  • Heater/filament current

    1.5 A

    Published European table row

Data set 02

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 2

Diode

Other

  • Maximum diode average current

    0.8 mA

SECTION 3

Pentode

Characteristics

  • Heater voltage

    6.3 V

  • Transconductance

    9500 uS

  • Plate resistance

    50000 ohm

Other

  • Plate voltage

    250 V

    ClassA

  • Screen voltage

    250 V

    ClassA

  • Plate current

    36 mA

    ClassA

  • Screen current

    5 mA

    ClassA

  • Load resistance

    7000 ohm

    ClassA

  • Output power

    4.3 W

    ClassA

  • Maximum plate dissipation

    9 W