DLS24

Reverse-action vacuum thermal-delay switch. Heater warm-up changes the sealed contact state after a controlled interval for sequencing and protective circuits.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: B7G
Socket code: -
Base pins: 7
Nominal heater: 6.3 V / 500 mA

Description

Reverse-action 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
30 s
Maximum delay time
90 s

Other

Maximum switch current at 240 V
1 A
Maximum switch current at 500 V
200 mA

Data set 02

1961 Associated Electrical Industries

Published operating points and test conditions from this source.

SECTION 1

ThermalDelaySwitch

Characteristics

MinimumDelayTime
3 s
Opening
MaximumDelayTime
90 s
Opening
HeaterResistanceCold
13 ohm
Minimum

Other

MaximumSwitchCurrent240VAC
1 A
MaximumSwitchCurrent500VAC
200 mA