QV2250C

Ceramic forced-air-cooled beam-power tetrode for RF, SSB linear, oscillator, frequency-multiplier, modulator, and high-power audio service to approximately 500 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6 V / 2.6 A

Description

The Mullard QV2250C is a ceramic forced-air-cooled beam-power tetrode for RF, SSB linear, oscillator, frequency multiplier, and modulator service.

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: 6 V
Nominal heater current: 2.6 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

Beam Power

X-ray radiationInterelectrode capacitances

Transconductance: 0.012 S
Max plate voltage: 2000 V
Max screen voltage: 300 V
Max plate dissipation: 250 W

Ceramic forced-air-cooled beam-power tetrode for RF, SSB linear, oscillator, frequency multiplier, and modulator service.

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

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristics

Heater/Filament Voltage
6 V
Heater/Filament Current
2.6 A
Transconductance
12000 uS
RepresentativeSpecifiedOperatingPoint

Other

Maximum Operating Frequency
500 MHz
FullOrSpecifiedRatings
Maximum Plate Voltage
2000 V
Maximum Screen Voltage
300 V
Maximum Plate Dissipation
250 W
RF Output Power
390 W
RepresentativePublishedOperatingPoint
RF Output Power
250 W
RepresentativePublishedOperatingPoint
PEP Output Power
300 W
RepresentativePublishedOperatingPoint
Push-Pull Audio Output Power
600 W
RepresentativePublishedOperatingPoint
Plate Voltage
2000 V
ClassC; TelegraphyOrFMTelephony; 175MHz
Plate Current
250 mA
ClassC; 175MHz
RF Output Power
390 W
ClassC; 175MHz
RF Output Power
250 W
ClassC; 500MHz
Push-Pull Output Power
600 W
ClassAB; AudioAmplifier; TwoTubes