Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Power - Beam (NOT sweep) ·BeamPower

QV0525

Beam tetrode designed for AF amplification and modulation plus RF power-amplifier and oscillator service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
MEDIUM5
Base pins
-
Nominal heater
6.3 V / 900 mA

Description

The Mullard QV0525 is a beam tetrode for AF amplification/modulation and RF power amplifier or oscillator service.

Socket description

Medium 5-contact transmitting-tube base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
MEDIUM5
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
900 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
Max plate voltage
600 V
Max screen voltage
250 V
Max plate dissipation
25 W

Published ratings and characteristics promoted semantically from the approved source; repeated identical physical sections compressed where applicable.

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

1951 Mullard Valve and Service Manual

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristic

  • Heating Time

    15 s

  • Application

    AF amplifier/modulator or RF amplifier/oscillator

Other

  • Operating Frequency Maximum

    60 MHz

    FullRatings

  • Plate Voltage

    600 V

    ClassC

Data set 02

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Maximum Plate Voltage

    600 V

  • Maximum Screen Voltage

    250 V

  • Maximum Plate Dissipation

    25 W

  • RF Output Power

    80 W

    RepresentativePublishedOperatingPoint

  • RF Output Power

    12.5 W

    RepresentativePublishedOperatingPoint

  • RF Output Power

    27.5 W

    RepresentativePublishedOperatingPoint