GR7M

Long-life cold-cathode seven-character end-viewing register integrating multiple display positions for compact multi-character electronic readout.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B13B
Base pins: -
Nominal heater: -

Description

GR7M is a cold-cathode long-life seven-character end-viewing register, classified as Nixie for this batch. The supplied datasheet was reviewed for ratings, operating conditions, display/counting function, and mechanical information.

Socket description

B13B Nixie 13-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B13B
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

Nixie

X-ray radiationInterelectrode capacitances

Max plate voltage: 160 V

Applicable published ratings promoted; switching, display, trigger and regulator characteristics 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

196X Ericsson Telephones Ltd

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristics

Minimum breakdown voltage
160 V
Nominal/running voltage
140 V
Displayed characters
+, —, V, A, (1, 9, a
Display orientation
End-viewing

Data set 02

196X Nixie Random Datasheets

Published operating points and test conditions from this source.

SECTION 1

Nixie

Characteristic

Running Voltage
140 V
Published datasheet value
Minimum Breakdown Voltage
160 V
Published datasheet value