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Specialized - Switching Tube ·RelayControlSwitch

GR17

Cold-cathode gas relay triode with molybdenum cathode for AC anode supply and starter control. Gas discharge provides heaterless relay switching.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
9
Nominal heater
-

Description

Cold-cathode gas relay triode with molybdenum cathode for 220 V AC anode supply and starter control.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
9
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 0

RelayControlSwitch

X-ray radiationInterelectrode capacitances
Max cathode current
40 mA

Cold-cathode switching/relay/display section; device-specific glow-discharge values preserved in parameter table.

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

1962 Cerberus

Published operating points and test conditions from this source.

SECTION 0

RelayControlSwitch

Characteristic

  • BreakdownVoltageAK

    300 to 450 V

    AC

  • StarterBreakdownVoltage

    120 to 150 V

    Starter negative

  • SustainingVoltageAK

    108 to 118 V

    At 20 mA

Other

  • MeanAnodeCurrent

    5 to 40 mA

  • Anode Supply Voltage

    180 to 265 V

    AC