Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Specialized - Cathode Ray ·CathodeRay

3AHP2

Small electrostatic cathode-ray instrument display tube with a 6.3 V heater, anode operation up to about 2.75 kV, and electrostatic deflection electrodes for waveform presentation.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 600 mA

Description

Focusing Method ....cuvicevsveoncanaraanessscsnss electrostatic Deflection Method ceiovecioesasaacs ressrescscrcasr €lectrostatic Cathode to all other electrodes ...... nesnes e 4.0 uuf Grid #1 to all other electrodes ..cvcavonsaas « 11.0 uuf Dl to D2 s.evcevocccnannrcnna cecosrsossvaaenarea 4.0 uuf

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
600 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.

CRT section; maximum anode voltage 2750 V and capacitances retained in parameter table.

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

1960 Waterman Products

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • Cathode to all other electrodes ...... nesnes e

    4 pF

    Cathode to all other electrodes ...... nesnes e 4.0 uuf

  • Grid # [1]

    1 pF

    Grid #1 to all other electrodes ..cvcavonsaas « 11.0 uuf

  • Grid # [2]

    11 pF

    Grid #1 to all other electrodes ..cvcavonsaas « 11.0 uuf

  • Heater Voltage «ivievivincannas ver s

    6.3 V

    Heater Voltage «ivievivincannas ver s 6.3 volts

  • Heater Current at [1]

    6.3 V

    Heater Current at 6.3 volts savuvenvrans .6 T10% amperes

  • Heater Current at [2]

    6 V

    Heater Current at 6.3 volts savuvenvrans .6 T10% amperes

  • Heater Current at [3]

    0 V

    Heater Current at 6.3 volts savuvenvrans .6 T10% amperes

  • Anode Voltage ..vsivcsnnseasnassnrnsanse

    2750 V

    Anode Voltage ..vsivcsnnseasnassnrnsanse 2750 max volts DC

  • Anode lnput L R I I N A A S )

    6

    Anode lnput L R I I N A A S ) 6 max watts

  • Anode # [1]

    1 V

    Anode #1 {Focusing Electrode VYoltage)... 1100 max volts DC

  • Anode # [2]

    1100 V

    Anode #1 {Focusing Electrode VYoltage)... 1100 max volts DC

  • Grid #

    1

    Grid #1 VYoltage

  • Heater pogitive with respect to

    125 V

    Heater pogitive with respect to 125 max volts

  • Cathode R R EE |

    25

    Cathode R R EE |25 max VO]tS

  • any Deflection Electrode vvivveeeneranns

    550 V

    any Deflection Electrode vvivveeeneranns 550 max volts

  • Anode # [1]

    2 V

    Anode #2 Voltage 1000 2000 volts

  • Anode # [2]

    1000 V

    Anode #2 Voltage 1000 2000 volts

  • Anode # [3]

    2000 V

    Anode #2 Voltage 1000 2000 volts

  • Anode #| Voltag [1]

    165 V

    Anode #| Voltag 165 to 310 330 to 620 volts

  • Anode #| Voltag [2]

    310 V

    Anode #| Voltag 165 to 310 330 to 620 volts

  • Anode #| Voltag [3]

    330 V

    Anode #| Voltag 165 to 310 330 to 620 volts

  • Anode #| Voltag [4]

    620 V

    Anode #| Voltag 165 to 310 330 to 620 volts

  • Grid # [1]

    1 V

    Grid #1 Voltage?Note ) -29 to -67.5 -58 to =135 wvolts

  • Grid # [2]

    -29 V

    Grid #1 Voltage?Note ) -29 to -67.5 -58 to =135 wvolts

  • Grid # [3]

    -67.5 V

    Grid #1 Voltage?Note ) -29 to -67.5 -58 to =135 wvolts

  • Grid # [4]

    -58 V

    Grid #1 Voltage?Note ) -29 to -67.5 -58 to =135 wvolts

  • Grid # [5]

    135 V

    Grid #1 Voltage?Note ) -29 to -67.5 -58 to =135 wvolts

  • Published value

    2

    2- Connect free deflecting electrodes to anode.