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Specialized - Cathode Ray ·CathodeRay

1EP11

Small cathode-ray oscillograph tube with electrostatic focusing and deflection and a P11 phosphor screen. RCA specifies a maximum anode or ultor voltage around 1.5 kV for waveform and indicator display service.

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

Description

1EP11 is a cathode-ray oscillograph tube intended for waveform and indicator display service. The supplied RCA data describes electrostatic focusing and electrostatic deflection, with a P11 phosphor screen and a published maximum anode/ultor voltage of 1500 V.

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
Max plate voltage
1500 V

Cathode-ray electron-gun/screen system; anode/ultor maximum promoted to MaxPlateVoltage when explicitly published. No explicit X-ray precaution detected in the supplied source.

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

1971 RCA HB3 Binder 1 of 7

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

  • Heater Voltage

    6.3 V

    Nominal heater voltage

  • Heater Current

    600 mA

    Nominal heater current

  • Phosphor

    P11

    Published phosphor designation

  • GRID—N~

    3 V

    GRID—N~ 3 VOLTS ADJUSTED FOR FOGUS.

  • GRID—N°

    1 V

    GRID—N° 1 VOLTS

Construction

  • Focusing Method

    Electrostatic

    Published focusing method

  • Deflection Method

    Electrostatic

    Published deflection method

Characteristic

  • — GRID-N~3 VOLTS ADJUSTED FOR SHARP FpCUS

    3 V

    — GRID-N~3 VOLTS ADJUSTED FOR SHARP FpCUS