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25VAGP22

Twenty-five-inch color television picture tube with three electrostatically focused guns, magnetic convergence/deflection, and an aluminized P22 tricolor screen. High-voltage direct-view construction and shadow-mask color presentation place it firmly in color receiver service.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: DUODECAL12
Base pins: -
Nominal heater: 6.3 V / 900 mA

Description

25-inch 90-degree three-gun color television CRT with rare-earth-red P22 color screen and bipotential electrostatic focus.

Socket description

Duodecal 12-contact color CRT base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: DUODECAL12
Base pins: -
Nominal heater voltage: 6.3 V
Nominal heater current: 900 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.

Three-gun color CRT electron-gun/display assembly.

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

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

Heater Voltage
6.3 V
Heater Current
900 mA
Electron Guns
3 count
RedBlueGreen
Focusing Method
Electrostatic text
Focus Lens
Bipotential text
Convergence Method
Magnetic text
Deflection Method
Magnetic text
Diagonal Deflection Angle
90 deg
Approximate
Horizontal Deflection Angle
78 deg
Approximate
Vertical Deflection Angle
60 deg
Approximate
Grid1-to-All Capacitance
9 pF
AnyGun
Parallel Cathodes-to-All Capacitance
12 pF
AllGunsParallel
Focus Electrode-to-All Capacitance
9 pF
Grid3
External Coating-to-Anode Capacitance Minimum
2000 pF
External Coating-to-Anode Capacitance Maximum
2500 pF
Phosphor
Aluminized Tri-color P22 text
Shadow Mask
Temperature Compensated text
Screen Area
315 sq in
Approximate