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Tube Tinker — Electron Tube Database
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Specialized - Photo Tube ·CameraPickup

GL8511

Vidicon television camera tube designed for sensitive optical image pickup in studio, remote, industrial, or compact camera systems.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
DITETRAR8
Base pins
-
Nominal heater
6.3 V / 90 mA

Description

Short low-heater-power vidicon for transistorized cameras, combining high sensitivity and low lag with industrial and live-pickup capability.

Socket description

Small-button Ditetrar 8-pin

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
DITETRAR8
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
90 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

CameraPickup

X-ray radiationInterelectrode capacitances
Max plate voltage
100 V
Max screen voltage
750 V
Max cathode current
0.0006 mA

Vidicon camera section. MaxPlateVoltage stores target-voltage maximum; MaxScreenVoltage stores grid-2 maximum for lack of a more specific promoted field.

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

1964 RMA EIA

Published operating points and test conditions from this source.

SECTION 1

CameraPickup

Construction

  • Camera-tube type

    Vidicon

  • Scanned target size

    1/2 x 3/8 in

  • Maximum useful image diagonal

    0.62 in

Other

  • Heater voltage tolerance

    +/-10 %

  • Faceplate illumination maximum

    1000 foot-candle

  • Faceplate temperature maximum

    71 C

  • Target voltage maximum

    100 V

  • Target current peak maximum

    0.6 uA

  • Dark current maximum

    0.25 uA

  • Grid3-and-grid4 voltage maximum

    750 V

  • Grid2 voltage maximum

    750 V

  • Grid1 negative bias maximum

    -300 V

  • Grid1 positive bias maximum

    0 V

  • Heater-cathode voltage maximum heater negative

    125 V

  • Heater-cathode voltage maximum heater positive

    10 V

  • Typical faceplate temperature

    30 to 35 C

  • Typical grid3-and-grid4 voltage

    250 to 300 V

  • Typical grid2 voltage

    300 V

  • Grid1 picture-cutoff voltage

    -45 to -100 V

  • Blanking voltage at grid1 minimum

    75 V p-p

  • Blanking voltage at cathode minimum

    20 V p-p

  • Focus-coil field strength

    40 gauss

  • Alignment-coil field strength

    0 to 4 gauss

  • Average-sensitivity faceplate illumination

    1 foot-candle

  • Average-sensitivity target voltage

    30 to 50 V

  • Average-sensitivity dark current

    0.02 uA

  • Maximum-sensitivity faceplate illumination

    0.2 foot-candle

  • Maximum-sensitivity target voltage

    40 to 100 V

  • Maximum-sensitivity dark current

    0.2 uA

Characteristics

  • Heater current

    90 mA

  • Heater power approximate

    0.6 W

  • Focus method

    Magnetic

  • Deflection method

    Magnetic

  • Resolution minimum at center

    600 TV lines

  • Average gamma

    0.65

Capacitance

  • Anode-to-all capacitance

    3.6 pF

Application

  • Application

    Transistorized camera / industrial and live television pickup