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Voltage Pentode ·Pentode

CV2276

Secondary-emitter high-slope pentode designed for wide-band radio-frequency amplification.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 300 mA

Description

Secondary-emitter high-slope pentode for wide-band RF amplification.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
300 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
Plate resistance
50000 Ω
Transconductance
0.019 S
Max plate voltage
350 V
Max screen voltage
250 V
Max plate dissipation
2.5 W
Max screen dissipation
0.8 W

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

1955 Marconi

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

  • Heater/Filament Voltage

    6.3 V

  • Transconductance

    19000 uS

  • Plate Resistance

    50000 ohm

  • Equivalent noise resistance

    5000 ohm

Other

  • Maximum/Published Anode Voltage

    350 V

  • Maximum/Published Screen Voltage

    250 V

  • Maximum Anode Dissipation

    2.5 W

  • Maximum Screen Dissipation

    0.8 W

Capacitance

  • Grid-Anode Capacitance

    0.003 pF

  • Input Capacitance

    8 pF

  • Output Capacitance

    3 pF