GL921

Photoemissive phototube designed for light measurement, relay, or industrial photoelectric detection.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Description

Cartridge-type two-electrode gas-filled phototube for relay and light-measurement applications.

General specifications

Properties common to every published source and operating point.

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

1 physical section, each with unique specifications.

Section 1

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Phototube has no dedicated canonical SectionType; published electrical ratings and characteristics are preserved in TUBE_SECTION_PARAMETER.

Source-dependent data

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

Published operating points and test conditions from this source.

SECTION 1