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14AEP4

Fourteen-inch rectangular television picture tube with electrostatic focus, magnetic deflection, 90-degree geometry, neutral-gray face glass, and an aluminized screen. Its cathode-drive electron gun and low grid-2 voltage were designed to improve highlight contrast and picture brightness.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: DUODECAL6
Base pins: -
Nominal heater: -

Description

V\éstinghouse RELIATRON® usss 14AEP4 TELEVISION PICTURE TUBE TYPE 14AEP4 February 20, 1957 90° Deflaction Low G2 Voltage External Conductive Coating Rectongular Glass Cathode Drive Design Spherical Face Plate Magnetic Deflection Aluminized 12 1/16" x 9 1/2" Picture No fon Trap The 14AEP4 is an electrostatic-focus picture tube of rectangular glass construction with a spherical face plate of neutral gray glass. Its features include an eiectron gun designed specifically for cathode drive oper- ation. Fuller advantage is taken of the potentialities of cathode drive, with the result that this tube gives in- creased highlight contrast, as compared with conventional tubes, with equal or slightly less drive required. It operates at a low G2 voltage. The allowable cutoff range has been reduced to assure greater uniformity of product. The 14AEP4 has an external conductive coating, and it has a metalbacked screen for increased picture brightness. A new design no-ion-trap gun allows a reduction in

Socket description

Small-shell Duodecal 6-contact CRT base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: DUODECAL6
Base pins: -
Nominal heater voltage: -
Nominal heater current: -
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.

Source-derived physical section; applicable promoted ratings are populated from the printed sheet.

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

1947 Westinghouse

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Other

90° Deflaction Low G2 Voltage External Conductive Coating
90 V
90° Deflaction Low G2 Voltage External Conductive Coating
Heater: Anode Voltage* .. ............ vo
14000 V
Heater: Anode Voltage* .. ............ vo. 14,000 max. Vahs
Yoltage . . . v oo i e
1 V
Yoltage . . . v oo i e 6.3 ac or dc Yolts Grid 4 1o Grid | Voltag
Curront . .. o vt e N 'K Ampere Positive Yalue . . ... .. ... .... e
1000 A
Curront . .. o vt e N 'K Ampere Positive Yalue . . ... .. ... .... e 1000 mox. Volrs
Grid
200 pF
Grid 1 to all other electrodes . . . .. ... 6 uuf Grid 2 ta Grid | Yoltege , , ., ., ., .... 200 max. Yolts
Cathode to all other alectrodes
1 pF
Cathode to all other alectrodes ... ... 5 uuf Cathodse to Grid 1 Volrage
External Conductive Cooting to Anode Peositive Bias Valve
125 V
External Conductive Cooting to Anode Peositive Bias Valve. . . .. ......... 125 max, Volts
Fluorescence ... .. oouvvvvnninnn White During worm-up period of
410 V
Fluorescence ... .. oouvvvvnninnn White During worm-up period of 15 sec, max. . 410 max, Volts
Focusing Method . . . ... ... ++. Low-Voltoge Electrostatic Heater Positive with sespact to Cathode
180 V
Focusing Method . . . ... ... ++. Low-Voltoge Electrostatic Heater Positive with sespact to Cathode. 180 max. Yalis
to
350 V
to +350 +350 Volts
Faceplate .. .. ........... Ve Spherical Grid | Circuit Reslstance ., ...... v+
1.5 Mohm
Faceplate .. .. ........... Ve Spherical Grid | Circuit Reslstance ., ...... v+ 1.5 max. Megohms
Glags .. ... v, crreas Neutral Fifter Grid
0.1 Mohm
Glags .. ... v, crreas Neutral Fifter Grid 2 Circuit Rosistance® ., . ....... 0.1 min. Megohm
Anode Terminol o v vs i w e n e Rocessed Small Cavity Cap V°|'°
9 V
Anode Terminol o v vs i w e n e Rocessed Small Cavity Cap V°|'°9°—| In general, anode voltage should not ba less than
QETEC J1
9000 V
QETEC J1-21) 9000 volts..
CATHODE DRIVE YOLTS FROM RASTER CUTORF GRID
2 V
CATHODE DRIVE YOLTS FROM RASTER CUTORF GRID 2 TG GRID | VOLTS

Characteristic

Transmission {Approx.) .. ... ...y
0.1 Mohm
Transmission {Approx.) .. ... ...y 78 per cont Focus Electrade Circuit Resistance @, .. 0.1 min. Megohm