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22EP22

P22 color cathode-ray picture tube documented for high-voltage color television display service, using a multicolor phosphor screen and manufacturer-specified electron-gun and deflection system.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: DIHEPTAL12
Base pins: -
Nominal heater: 6.3 V / 1.8 A

Description

Twenty-two-inch dual-gun color picture tube with all-glass envelope and 25 kV anode rating.

Socket description

Medium-shell Diheptal 12-contact CRT base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: DIHEPTAL12
Base pins: -
Nominal heater voltage: 6.3 V
Nominal heater current: 1.8 A
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: 25000 V
Max cathode current: 0.5 mA

Published electrical limits promoted from the source. Passive microwave reference cavities have their electrical frequency/Q values in TUBE_SECTION_PARAMETER because no applicable promoted frequency field exists in the fixed section schema.

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

HeaterVoltageNominal
6.3 V
Nominal
HeaterCurrentNominal
1.8 A
Nominal
MaximumElectrodeOrAnodeVoltage
25000 V
MaximumCurrent
0.5 mA