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23ASP4

Twenty-three-inch 92-degree monochrome television picture tube with electrostatic focusing, magnetic deflection, and an aluminized P4 screen. Its high-voltage anode system is rated to approximately 22 kV.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: DUODECAL5
Base pins: -
Nominal heater: 6.3 V / 600 mA

Description

23-inch 92-degree monochrome television CRT with electrostatic focus, magnetic deflection, and aluminized P4 screen.

Socket description

Small-shell Duodecal 5-contact CRT base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: DUODECAL5
Base pins: -
Nominal heater voltage: 6.3 V
Nominal heater current: 600 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

Max plate voltage: 22000 V

CRT-specific ratings, operating conditions, capacitances, focus/deflection, cutoff, optical, and screen data are retained in section parameters.

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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

Phosphor
P4
Deflection method
Magnetic
Focusing method
Electrostatic

Data set 02

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

Focusing method
Electrostatic
Deflection method
Magnetic
Heater voltage
6.3 V
Heater current
600 mA
Diagonal deflection angle
92 deg
Heater warm-up time
11 s

Construction

Phosphor
Aluminized P4

Other

Maximum anode voltage
22000 V
Grid1 circuit resistance maximum
1.5 Mohm
Anode voltage minimum
11000 V
Typical anode voltage
16000 V
Typical focus-electrode voltage
0 to 400 V
Typical grid2 voltage
500 V
Focus-electrode voltage minimum
-550 V
Focus-electrode voltage maximum
1100 V
Heater-cathode voltage maximum
200 V

Application

Application
Monochrome television picture display

Capacitance

Cathode-to-all capacitance
5 pF
Grid1-to-all capacitance
6 pF