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Specialized - Cathode Ray ·CathodeRay

DB105

Philips cathode-ray oscilloscope tube for oscillography, using electrostatic beam control. Manufacturer documentation provides screen, focusing and deflection, capacitance, sensitivity, rating, and operating data where published.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
4 V / 560 mA

Description

DB105 is a Philips post-accelerated cathode-ray tube for oscillography. The supplied datasheet provides electrostatic-deflection, focusing, acceleration, screen and operating characteristics.

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
4 V
Nominal heater current
560 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

Cathode Ray

X-ray radiationInterelectrode capacitances
Max plate voltage
3000 V

Electrostatic deflection, accelerator/focus/grid voltages, sensitivities and limiting values reviewed.

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 V2

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • Main accelerating voltage

    1000 V

  • Post-acceleration voltage

    2500 V

  • Focusing-grid voltage

    200 to 340 V

  • Maximum post-acceleration voltage

    3000 V

  • Maximum main accelerating voltage

    1200 V

Characteristic

  • Deflection sensitivity N2 without post-acceleration

    0.55 mm/V

  • Deflection sensitivity N2 with post-acceleration

    0.32 mm/V

Data set 02

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • Accelerator voltage

    2500 V