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6EJ4A

Low-current high-voltage beam triode for color-television shunt regulation, incorporating X-radiation shielding and design controls to reduce radiation output.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B12C
Base pins: 12
Nominal heater: 6.3 V / 200 mA

Description

The 6EJ4-A is a low-current, high-voltage beam triode intended for use as a shunt regulator in the high-voltage supply of color television receivers, with built-in X-radiation shielding and controls for reduced X-radiation output.

Socket description

Duodecar 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B12C
Base pins: 12
Nominal heater voltage: 6.3 V
Nominal heater current: 200 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

Triode

X-ray radiationInterelectrode capacitances

Transconductance: 0.0002 S
Max plate voltage: 27000 V
Max plate dissipation: 40 W

High-voltage beam triode shunt-regulator section; absolute maximum DC plate current 1.5 mA preserved as parameter.

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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

DC Plate Current
1.5 mA
AbsoluteMaximum
Regulated DC Output Voltage
25000 V
ZeroLoad
Regulated DC Output Voltage
24500 V
LoadCurrent=1mA
X-radiation Maximum
0.5 mR/hr

Characteristic

Effective Grid-Plate Transconductance
200 uS
ShuntRegulator