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Power - Beam (NOT sweep) ·BeamPower

50HB26

Beam-power tube intended for power-amplifier service, with published Class-A1 and push-pull Class-AB1 operating conditions for audio-frequency output stages.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9D
Base pins
9
Nominal heater
50 V / 150 mA

Description

Beam-power tube for power-amplifier service with published Class A1 and Class AB1 push-pull operating examples.

Socket description

Magnoval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B9D
Base pins
9
Nominal heater voltage
50 V
Nominal heater current
150 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
4000 Ω
Transconductance
0.015 S
Max plate voltage
350 V
Max screen voltage
300 V
Max plate dissipation
18 W
Max screen dissipation
5 W
Max grid dissipation
7 W
Max cathode current
220 mA

Beam power amplifier; promoted maximum ratings and typical characteristics from the printed sheet.

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

1961 Matsushita

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Capacitance

  • Grid No. 1 to plate capacitance maximum

    - to 1.1 pF

  • Input capacitance

    17.3 pF

  • Output capacitance

    7.7 pF

  • Grid No. 1 to heater capacitance maximum

    - to 0.25 pF

Other

  • Typical plate voltage

    130 V

    ClassA1

  • Typical screen voltage

    130 V

    ClassA1

  • Typical plate current

    123 mA

    ClassA1

  • Push-pull output power

    47 W

    ClassAB1,PushPull,TwoTubes