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Specialized - Switching Tube ·ThermalDelaySwitch

DLS19

Miniature vacuum thermal-delay switch. Heater warm-up actuates sealed contacts after a controlled interval for sequencing and equipment protection.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
B7G
Socket code
-
Base pins
7
Nominal heater
6.3 V / 500 mA

Description

Miniature vacuum thermal delay switch.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
B7G
Socket code
-
Base pins
7
Nominal heater voltage
6.3 V
Nominal heater current
500 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

B7G - 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

ThermalDelaySwitch

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

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

ThermalDelaySwitch

Characteristic

  • Minimum delay time

    35 s

  • Maximum delay time

    70 s

Other

  • Maximum heater-contact voltage

    200 V

  • Maximum switch current at 250 V

    2 A

  • Maximum switch current at 500 V

    100 mA

Data set 02

1961 Associated Electrical Industries

Published operating points and test conditions from this source.

SECTION 1

ThermalDelaySwitch

Characteristics

  • MinimumDelayTime

    35 s

    Closure

  • MaximumDelayTime

    70 s

    Closure

Other

  • MaximumSwitchCurrent250VAC

    2 A

  • MaximumSwitchCurrent500VAC

    100 mA

  • MaximumHeaterContactVoltage

    200 V