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DR102

Philips or Mullard oscillography CRT with electrostatic beam control and a greenish-yellow long-persistence screen. Its lingering trace is intended for waveform measurements and instrument displays requiring extended visual retention.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

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

Description

Cathode-ray oscilloscope tube. The source provides CRT heater, focusing/deflection, capacitance, scan/sensitivity and operating data where published.

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

Cathode Ray

X-ray radiationInterelectrode capacitances

Max plate voltage: 2500 V

Electrostatically focused and deflected CRT for oscillography. Screen variant: green-yellow, long persistence.

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

Characteristic

Heater voltage
6.3 V
Published heater rating
Heater current
300 mA
Published heater rating

Capacitance

Cathode capacitance
6 pF
OscilloscopeCRT
Grid No.1 capacitance
4.6 pF
OscilloscopeCRT
D1-pair capacitance
1.9 pF
OscilloscopeCRT
D2-pair capacitance
2.5 pF
OscilloscopeCRT