TH9428A

High-resolution Thomson-CSF triple-field electronic-zoom X-ray image intensifier with 22, 16, and 11.5 cm input fields. Electronic field selection provides magnified diagnostic X-ray viewing.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: -

Description

The Thomson-CSF TH9428A is a high-resolution triple-field electronic-zoom x-ray image intensifier with 22/16/11.5 cm input fields.

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: -
Nominal heater current: -
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

ImageConverterIntensifier

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Electron-optical image-intensifier structure; electrode voltages and currents retained as parameters.

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

1972 Thomson CSF

Published operating points and test conditions from this source.

SECTION 1

ImageConverterIntensifier

Other

Maximum anode voltage
32 kV
Maximum photocathode current
0.5 uA
Maximum g1 current
1 uA
Maximum g2 current
1 uA
Maximum g3 current
1 uA
Maximum g4 current
10 uA
Maximum anode current
2 uA
Luminance/brightness gain
7000 x
Active getter anode voltage
3.5 kV
Input field mode 1
22 cm
Input field mode 2
16 cm
Input field mode 3
11.5 cm

Characteristic

Nominal/full input field diameter
22 cm
Output image diameter
20 mm