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PL5

Mercury relay valve with capacitive ignition for stroboscopes and film projection in television transmitters. Triggered discharge produces controlled high-current pulses.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

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

Description

Mercury relay valve with capacitive ignition for stroboscopes and film projection in television transmitters.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
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

Thyratron

X-ray radiationInterelectrode capacitances

Max cathode current: 3.5 A

Promoted only where the locked schema has a direct semantic match; additional CRT, regulator, thyratron, pulse, capacitance, and operating values are retained in TUBE_SECTION_PARAMETER.

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

1963 Philips Electron Tubes Handbook V3

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

RMS anode voltage maximum
500 V RMS
RelayValve
RMS anode voltage minimum
20 V RMS
RelayValve
Peak inverse anode voltage maximum
1500 V
RelayValve
Average anode current maximum with fan cooling
3.5 A
RelayValve
Peak anode current maximum
1000 A
RelayValve
Ignition voltage maximum
25 V
CapacitiveIgnition
Repetition frequency maximum
300 Hz
RelayValve
Ignitor pulse voltage
12 to 15 kV
CapacitiveIgnition
Ignitor current maximum
100 mA
CapacitiveIgnition

Characteristic

Arc voltage drop
15 V
FanCooling
Input energy per ignition cycle
12 to 25 mWs
CapacitiveIgnition

Capacitance

Ignitor-to-cathode capacitance
10 pF
Section1

Data set 02

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

Maximum anode voltage
500 V
Maximum inverse anode voltage
1500 V
Maximum ignition voltage
25 V