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Specialized - Photo Tube ·ImageConverterIntensifier

TH9475

Electrostatic or cascaded image-intensifier tube designed for night viewing or specialized ultraviolet/low-light imaging.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
-

Description

The Thomson-CSF TH9475 is a three-cascaded-stage fiber-optic light image intensifier for very-high-gain night viewing.

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.

Three-stage electron-optical image intensifier; stage supply and photocathode/screen performance 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

Characteristic

  • Number of cascaded stages

    3

Other

  • Stage voltage

    15 kV

  • Maximum supply peak-to-peak voltage

    2800 V

  • Supply frequency

    1400 to 2000 Hz

  • Typical supply peak-to-peak voltage

    2700 V

  • Typical supply frequency

    1500 Hz

  • Viewing screen potential

    45 kV

  • Photocathode luminous sensitivity

    150 to 200 uA/lm

  • Photocathode radiant sensitivity at 800 nm

    6 to 10 mA/W

  • Photocathode radiant sensitivity at 850 nm

    1 to 3 mA/W

  • Luminance gain

    10000 to 20000 x

  • Maximum photocathode illumination

    0.005 lux