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Specialized - Photo Tube ·PhotoconductiveDetector

8217

Cadmium-sulfide photoconductive cell designed for visible-light sensing and industrial relay or control applications.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
2
Nominal heater
-

Description

Side-illuminated cadmium-sulphide photoconductive non-polarized cell for street-light controllers and other light-controlled relay applications.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
2
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

PhotoconductiveDetector

X-ray radiationInterelectrode capacitances
Max plate voltage
300 V
Max plate dissipation
0.4 W

Nonstandard photo/electron-multiplier device; useful published numerical data is preserved 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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

PhotoconductiveDetector

Other

  • Applied voltage maximum

    300 V

  • Current maximum

    20 mA

  • Power dissipation at 25 C

    400 mW

Characteristic

  • Light resistance average

    7 kohm

    10 foot-candles; 2870 K

  • Dark resistance minimum

    1 Mohm

    20 seconds after removing illumination

  • Wavelength of maximum response

    5800 angstrom

    Nominal

Data set 02

1966 Tung Sol Electronic Tubes 4 of 4

Published operating points and test conditions from this source.

SECTION 1

PhotoconductiveDetector

Other

  • Maximum applied voltage

    300 V

    DCOrPeakAC

  • Maximum current

    20 mA

    UniformIllumination

  • Power dissipation at 25 C

    400 mW

  • Power dissipation at 70 C

    170 mW

  • Ambient temperature minimum

    -40 degC

  • Ambient temperature maximum

    70 degC

Characteristic

  • Wavelength of maximum response

    5800 angstrom

    Approximate

  • Light resistance minimum

    5 kohm

    10FootCandles;2870K

  • Light resistance average

    7 kohm

    10FootCandles;2870K

  • Light resistance maximum

    10 kohm

    10FootCandles;2870K

  • Dark resistance minimum

    1 megohm

    20SecondsAfterDark

Construction

  • Sensitive material

    Cadmium sulphide

Application

  • Application

    Street light controller

  • Application

    Light-controlled relay