CV426

British military television flyback/EHT rectifier designed to convert horizontal-output transformer pulses into the CRT accelerating supply. Its low-power heater minimizes isolated heater requirements at elevated high-voltage potential.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 90 mA

Description

Commercial equivalent explicitly printed for Brimar R12, a wire-ended television EHT half-wave rectifier.

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: 6.3 V
Nominal heater current: 90 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

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 17000 V
Rectifier nominal output current: 0.5 mA

Published ratings and characteristics promoted semantically from the approved source; identical repeated 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

1958 Brimar Radio Valve No 7

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Peak Inverse Voltage
17 kV
Rectified Current
0.5 mA
SinusoidalInput
Rectified Current
0.1 mA
PulseInput
Maximum Operating Frequency
500 kHz
SinusoidalInput

Characteristic

Commercial Equivalent
R12