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CL62

Ferranti vacuum grid-controlled triode light source using ultraviolet-emitting phosphor, designed for high-speed stroboscopic photography and specialized optical work.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 300 mA

Description

The Ferranti CL62 is a vacuum grid-controlled triode light source for high-speed stroboscopic work, using a ultraviolet phosphor.

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: 6.3 V
Nominal heater current: 300 mA
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: 20000 V
Max cathode current: 0.2 mA

Grid-controlled electron-beam light-source triode.

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

Characteristics

Heater Voltage
6.3 V
Heater Current
300 mA
Grid Cutoff Voltage
-30 V
LowerMagnitudeLimit; range -30 to -80V
Grid Cutoff Voltage
-80 V
UpperMagnitudeLimit; range -30 to -80V
Maximum Grid Drive
150 V
ForMaximumAnodeCurrent
Phosphor Type
Q text
Fluorescence
Ultraviolet text
Decay Time
0.1 us
Approximate
Light Output
240 cd
Va=20kV; PeakBeamCurrent=100mA

Other

Maximum Anode Voltage
20000 V
NormalRating
Maximum Pulsed Anode Current
100 mA
Pulse
Maximum Mean Anode Current
0.2 mA