Skip to main content

Specialized - Photo Tube ·LightSource

EN55

Xenon gas-discharge stroboscopic light source for controlled high-intensity repetitive flashes.

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

Description

The Ferranti EN55 is a gas-discharge stroboscopic light source intended for controlled high-intensity flashes.

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

LightSource

X-ray radiationInterelectrode capacitances
Max plate voltage
1000 V

Arc-discharge stroboscopic light-source section; representative section where repeated.

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 Ferranti

Published operating points and test conditions from this source.

SECTION 1

LightSource

Other

  • Maximum Static Anode Voltage

    1000 V

  • Maximum Working Anode Voltage

    900 V

  • Maximum Dissipation

    20 W

  • Maximum Discharge Capacitor

    6 uF

  • Maximum Flash Repetition Rate

    400 Hz

  • Trigger Voltage

    3 kV

    PeakPulse

  • Minimum Charging Resistor

    8000 ohm

    12-150Hz

  • Minimum Charging Resistor

    11000 ohm

    150-400Hz

Characteristics

  • Minimum Working Anode Voltage

    700 V

  • Typical Peak Luminous Intensity

    140000 cd

    Va=900V; C=6uF

  • Typical Flash Duration

    27.5 us

    25-30us; Va=900V; C=6uF