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DB711

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 / 95 mA

Description

Flat-face post-deflection-acceleration 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: 95 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
68 mm
Useful screen diameter 68 mm
Heater voltage Vp
6.3 V
Heater voltage Vp = 6.3 V
Heater current If
95 mA
Heater current If = 95 mA
Grid No
5.7 pF
Grid No.1 to all other electrodes CB1 = 5.7 pF
Cathode to all other electrodes Ck
3 pF
Cathode to all other electrodes Ck = 3.0 pF
Post accelerator voltage VB
1200 V
Post accelerator voltage VB6 = 1200 V
Second accelerator voltage VB
300 V
Second accelerator voltage VB4 = 300V
First accelerator voltage V
1200 V
First accelerator voltage V82 = 1200 V
Beam current IL
10 A
Beam current IL = 10A
Line width l.w
0.65 mm
Line width l.w. = 0.65 mm
Post accelerator voltage Vg b
1200 V
Post accelerator voltage Vg b = 1200 V
Focusing voltage Vg
20 to 150 V
Focusing voltage Vg3 = 20 to 150 V
First accelerator voltage Vg
1200 V
First accelerator voltage Vg2 = 1200 V
Negative grid No
1 V
Negative grid No.1 volt-
of focused spot -Vg
30 to 80 V
of focused spot -Vg1 = 30 to 80 V
Grid No
1 V
Grid No.1 voltage
Useful screen diameter
68 mm
Useful screen diameter
Post-deflection acceleration present
1
Source explicitly describes post-deflection acceleration

Other

Post• accelerator = max
2500 V
Post• accelerator = max. 2500 V
Second accelerator = max
2100 V
Second accelerator = max. 2100 V
Focusing voltage = max
1000 V
Focusing voltage = max. 1000 V
First accelerator = max
1600 V
First accelerator = max. 1600 V
grid No
4 A
grid No.4 and any de- = max. 500 V
grid No
500 V
grid No.4 and any de- = max. 500 V
cathode positive Vkf(k pos.) = max
100 V
cathode positive Vkf(k pos.) = max. 100 V
cathode negative Vkf(k neg.) = max
15 V
cathode negative Vkf(k neg.) = max.. 15 V
Cathode current Ik = max
200 uA
Cathode current Ik = max. 200 µARMS)
Mrel =Re
7 A
Mrel =Re7a five deflection factor

Data set 02

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristic

Useful screen diameter
68 mm
Published datasheet condition
Heater voltage Vf
6.3 V
Published datasheet condition
Heater current Tr
95 mA
Published datasheet condition
Published value
6 a
Published datasheet condition
My = 17.9 -~
22.8 V
Published datasheet condition
Published value
8.8 V
Published datasheet condition
My = 31.3
40 V
Published datasheet condition
Vee/Veq = 4 My = 10.7
13.7 V
Published datasheet condition
Post accelerator voltage Vgg
1200 V
Published datasheet condition
Second accelerator voltage V54
300 V
Published datasheet condition
First accelerator voltage Vgp
1200 V
Published datasheet condition
Post accelerator voltage Vg6
1200 V
Published datasheet condition
Isolation shield voltage Vgs = 300 £
30 V
Published datasheet condition
Focusing voltage Vg3 = 20 to
150 V
Published datasheet condition
First accelerator voltage Vgo
1200 V
Published datasheet condition
Negative grid No
1 v
Published datasheet condition
of focused spot -Vgy = 30 to
80 V
Published datasheet condition
in the x direction My 9.4 to
12 V
Published datasheet condition
in the y direction My 3.2 to
4.1 V
Published datasheet condition
in the x direction dx
60 mm
Published datasheet condition
in the y direction gy
45 mm
Published datasheet condition
iit
1 V
Published datasheet condition
Published value
40.8 mm
Published datasheet condition
a concentric square of
39.2 mm
Published datasheet condition
voltage vgs = mM8X
2200 V
Published datasheet condition
Grid No
1 v
Published datasheet condition
grid No
4 a
Published datasheet condition
ed spot Vgy = 30 to
60 V
Published datasheet condition
2) For calculation of the grid No
3 v
Published datasheet condition
Published value
20 A
Published datasheet condition
0 7 2
3 V
Published datasheet condition
Published value
40 a
Published datasheet condition
Published value
1 V
Published datasheet condition
Published value
2.963 A
Published datasheet condition
Published value
1 ma
Published datasheet condition
Published value
5 A
Published datasheet condition

Other

The resistance of the helix is
40 MΩ
Published datasheet condition
Post accelerator
2500 V
Published datasheet condition
voltage Veg
1200 V
Published datasheet condition
Second accelerator
2100 V
Published datasheet condition
voltage Vg = min,
300 V
Published datasheet condition
Focusing voltage V83
1000 V
Published datasheet condition
First accelerator
1600 V
Published datasheet condition
voltage ez = min,
800 v
Published datasheet condition
negative value Vg, = max,
200 V
Published datasheet condition
Peak voltage between Vx-g4 p
500 v
Published datasheet condition
Vy_g4 D
500 v
Published datasheet condition
cathode positive Vke(k pos.)
100 V
Published datasheet condition
cathode negative Vke(k neg.)
157 V
Published datasheet condition
Screen dissipation W£ = max.,
3 mW
Published datasheet condition
External grid No.1 resistance Rg
1 ma
Published datasheet condition
External grid No.1 resistance Rg1 max
1.5 MΩ
Published datasheet condition