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22WP22

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: J173-1
Socket code: -
Base pins: 12
Nominal heater: 6.3 V / 900 mA

Description

22WP22 is a color picture tube using electrostatic focusing and magnetic deflection. The source specifies a P22 screen and publishes CRT accelerating/anode ratings, control and focusing-electrode limits, heater-cathode limits, capacitances, and operating or deflection characteristics. The datasheet explicitly directs use of 22UP22 electrical data except for the stated screen, optical, or mechanical differences.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: J173-1
Socket code: -
Base pins: 12
Nominal heater voltage: 6.3 V
Nominal heater current: 900 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

J173-1 - 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: 27500 V

CRT maximum accelerating/anode/ultor voltage is promoted to MaxPlateVoltage; additional electrode ratings, capacitances, operating conditions, focus/deflection and optical data are preserved as parameters. Electrical data inherited from explicitly referenced 22UP22 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

1971 RCA HB3 Binder 1 of 7

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristic

Heater current
900 mA
At6.3V
Grid 3 current
-45 to 15 µA
Grid 2 current
5 to 5 µA
Faceplate light transmission
42 %
Approximate

Capacitance

Grid 3 to all other electrodes
6.5 pF
Cathode to all other electrodes
15 pF

Other

Minimum anode/ultor voltage
20000 V
Maximum grid 1 negative-bias voltage
400 V
NegativeBias
Maximum grid 1 negative operating cutoff voltage
200 V
NegativeCutoff
Maximum grid 1 positive-bias voltage
0 V
PositiveBias
Maximum grid 1 positive-peak voltage
2 V
PositivePeak
Heater operating voltage range
5.7 to 6.9 V
Operating
Maximum heater standby voltage
5.5 V
Standby
Grid 3 focus voltage as percent of anode voltage
16.8 to 20 %
Focus
Maximum grid 3 circuit resistance
7.5 MΩ
Projected screen area
227 in^2