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Power - Pentode (NOT beam) ·Pentode

F704

Pentode designed for output, amplifier, or modulator service. Manufacturer data provide heater ratings, operating limits, and electrical characteristics for power-capable amplification and modulation.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
7.5 V / 1.25 A

Description

Pentode for output, amplifier, or modulator service. Electrical ratings, heater data, operating limits, and published characteristics are captured from the supplied datasheet.

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
7.5 V
Nominal heater current
1.25 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

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances
Transconductance
0.0021 S
Max plate voltage
450 V
Max plate dissipation
25 W

Published ratings/characteristics are also preserved as parameter rows.

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

  • tie van

    25 W

    tie van 25 W mag niet wor-

  • ning van

    450 V

    ning van 450 V mag dus

  • 55 mA bedragen, hetgeen

    55 mA

    55 mA bedragen, hetgeen

  • spanning van ca

    84 V

    spanning van ca. 84 V het

  • anodespanning van

    400 V

    anodespanning van 400 Volt, waarbij de anodestroom

  • dus

    60 mA

    dus 60 mA mag bedragen hetgeen bij een negatieve

  • roosterspanning van ongeveer

    75 V

    roosterspanning van ongeveer 75 V het geval is.

  • ?:250 v

    250 v

    ?:250 v

  • Gloeispanning .......cviiiiiiiiiiii v, =

    7.5 V

    Gloeispanning .......cviiiiiiiiiiii v, = 7,5V

  • Gloeistroom ........oviiiiiiii i if = ca

    1.25 A

    Gloeistroom ........oviiiiiiii i if = ca. 1,25 A

  • Verzadigingsstroom ...t s = ca

    900 mA

    Verzadigingsstroom ...t s = ca. 900 mA

  • Anodespanning .......iiiiiiiiiiiii. .. v, =

    450 V

    Anodespanning .......iiiiiiiiiiiii. .. v, = 250—450 V

  • Maximale anodedissipatie ...................... w,=

    25 W

    Maximale anodedissipatie ...................... w,= 25 W

  • Anodedissipatie beproefd op ...... ... wy=

    35 W

    Anodedissipatie beproefd op ...... ... wy= 35 W

  • Steilheid ... o S = ca

    2.1 mA

    Steilheid ... o S = ca. 2,1 mA|V