927D

Gas-filled cesium photoelectric cell electrically equivalent to the 927 except for its base construction.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: 2
Nominal heater: -

Description

Mazda 927D is a gas-filled cesium photoelectric cell for light detection. The datasheet specifies anode-voltage and photocurrent limits together with sensitivity data. The 927D is electrically identical to the 927 except for its base.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 2
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

PhotoemissiveDetector

X-ray radiationInterelectrode capacitances

Max plate voltage: 90 V
Max cathode current: 0.002 mA

Explicitly identical to 927 except for base; electrical values taken from the approved 927 datasheet in this same batch.

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

1960 Mazda

Published operating points and test conditions from this source.

SECTION 1

PhotoemissiveDetector

Capacitance

Interelectrode capacitance
2 pF

Other

Mean cathode current maximum
2 uA
Load resistance minimum at 90 V
0.1 MOhm

Characteristic

Sensitivity at zero periods
125 uA/lumen
Gas amplification coefficient
10