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3AMP1A

Low-voltage Philips cathode-ray tube for oscilloscopes, using electrostatic focusing and double electrostatic deflection. Its compact three-inch format is intended for economical waveform and instrument-display applications.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

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

Description

Cathode-ray tube intended for oscilloscope/display service. Philips 3AMP1A; PHILIPS ELECTRON DEVICES LTD 3AMPIA DESCRIPTION Low voltage cathode ray tube for oscilloscopes ELECTRICAL DATA Heating . . Heater voltage 6.3V Heater current D.3A Focusing method electrostatic Deflection method double electrostatic Dl D2 symmetrical D3

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.

Published electrical values are also captured 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

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

Grid No. 2-and 4 voltage
500 V
Grid No. 2-and 4 voltage = 500 V
Grid No. 2 and 4 voltage {max’
800 v
Grid No. 2 and 4 voltage {max’ 800 v -
Screen dissipation max
19.4 mW
Screen dissipation max. 19.4 mW/sq. inch
Grid No. 1 citcuit resistance ‘ maz
0.5 MΩ
Grid No. 1 citcuit resistance ‘ maz. 0.5 MQ
Deflection plate circuit resistance - max
5 MΩ
Deflection plate circuit resistance - max. 5 MQ
Grid No. 2 and 4 voltage
500 v
Grid No. 2 and 4 voltage 500 v
» D{D, . o 84.6
-105.8 V
» D{D, . o 84.6-105.8 V/inch
Deflection factor {03 D4 47.8-59
-1 V
Deflection factor {03 D4 47.8-59-1 V/inch
Grid No.2 an 4 voltage
500 v
Grid No.2 an 4 voltage 500 v
84.6
-105.8 V
84.6-105.8 V/inch
59.1
-72.6 V
59.1-72.6 V/inch