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DB1378

Philips flat-face post-deflection-acceleration 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: 6.3 V / 300 mA

Description

Flat-face post-deflection-acceleration high-sensitivity 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

No fixed ratings are recorded for this section.

Electrostatic focusing/deflection CRT section; electrical/screen/deflection data retained in parameter rows.

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

Useful screen diameter
708 mm
Useful screen diameter 708 mm
Heater current If
300 mA
Heater current If = 0.3 A
Cathode to all other electrodes Ck
3.5 pF
Cathode to all other electrodes Ck = 3.5 pF
The post-accelerator helix is connected between
7 A
The post-accelerator helix is connected between 07 and 06
LINE WIDTH. measured on a circle of
30 mm
LINE WIDTH. measured on a circle of 30 mm diameter
Post accelerator voltage V
10 kV
Post accelerator voltage V67 = 10 kV
Beam current Ig
0.5 uA
Beam current Ig = 0.5 µA
Line width l.w
0.4 mm
Line width l.w. = 0.4 mm
Post accelerator voltage Vg
10 kV
Post accelerator voltage Vg7 = 10 kV
Accelerator voltage
85 V
Accelerator voltage = 1670 ± 85 V 1 )
Focusing electrode voltage Vg
180 to 590 V
Focusing electrode voltage Vg3 = 180 to 590 V
Grid No
-50 to -80 V
Grid No.1 voltage Vg1 = -50 to -80 V 2)
Grid No
1 V
Grid No.1 voltage Vg1 = -50 to -80 V 2)
Post accelerator voltage_ Vg
6 kV
Post accelerator voltage_ Vg7 =min. 6 kV
Grid No
1 V
Grid No.1 voltage
Focusing voltage Vg
110 to 355 V
Focusing voltage Vg3 = 110 to 355 V per kV of V82.84
Grid No
30 to 48 V
Grid No.1 voltage 2) -V81 = 30 to 48 V per kV of
Grid No
1 V
Grid No.1 voltage 2) -V81 = 30 to 48 V per kV of
Post-deflection acceleration present
1
Source explicitly describes post-deflection acceleration

Other

The useful scan may vertically be shifted max
3 mm
The useful scan may vertically be shifted max. 3 mm with
Focusing electrode voltage max
1500 V
Focusing electrode voltage max. 1500 V
cathode positive Vkf(k pos)= max
200 V
cathode positive Vkf(k pos)= max. 200 V
cathode negative Vkf(k neg)= max
125 V
cathode negative Vkf(k neg)= max. 125 V
Accelerator dissipation Wg
6 W
Accelerator dissipation Wg2.84 = max. 6w

Data set 02

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

Accelerator voltage
12000 V
Minimum accelerator voltage
1000 V

Characteristic

Useful vertical scan
40 mm
Useful horizontal scan
100 mm