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24AUP4

Twenty-four-inch direct-view monochrome television picture tube with a P4 screen and magnetic deflection. Manufacturer documentation provides the high-voltage operating, focusing, optical, and capacitance characteristics required for receiver display service.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: DUODECAL5
Base pins: 6
Nominal heater: 6.3 V / 600 mA

Description

24-inch 90-degree monochrome television CRT with electrostatic focus and magnetic deflection.

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: 6
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: 20000 V
Max screen voltage: 500 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

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
600 mA
Focusing Method
Low Voltage Electrostatic text
Deflection Method
Magnetic text
Horizontal Deflection Angle
85 deg
Approximate
Vertical Deflection Angle
68 deg
Approximate
Diagonal Deflection Angle
90 deg
Approximate
Phosphor
Aluminized P4 text
Fluorescence
White text
Light Transmittance
74 percent
Approximate
Cathode-to-All Capacitance
5 pF
Approximate
Grid1-to-All Capacitance
6 pF
Approximate
External Coating-to-Anode Capacitance Minimum
1700 pF
External Coating-to-Anode Capacitance Maximum
2500 pF

Other

Maximum Anode Voltage
22000 V
Minimum Anode Voltage
12000 V
Maximum Focus Electrode Positive Voltage
1100 V
Grid4
Maximum Focus Electrode Negative Voltage
-550 V
Grid4
Maximum Grid2 Voltage
700 V
Minimum Grid2 Voltage
300 V
Maximum Heater-Cathode Voltage During Warmup
450 V
Duration<=15s
Maximum Heater-Cathode Voltage After Warmup
200 V
Typical Anode Voltage
18000 V
CathodeDrive
Typical Focus Voltage Minimum
0 V
Grid4
Typical Focus Voltage Maximum
400 V
Grid4
Typical Grid2 Voltage
500 V
CathodeDrive
Cathode Voltage for Raster Cutoff Minimum
45 V
CathodeDrive
Cathode Voltage for Raster Cutoff Maximum
95 V
CathodeDrive
Maximum Grid1 Circuit Resistance
1.5 Mohm

Data set 02

1971 RCA HB3 Binder 1 of 7

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

Voltage
6.3 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Current — published value 1
0.6
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Current — published value 2
5
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Grid No.l to all other electrodes
6
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Light transmission (Approx.)
74
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
ULTOR VOLTAGE
20000 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
With
5 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
focus§ — published value 1
-75 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
focus§ — published value 2
400 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Grid-No.4 Current — published value 1
-25
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Grid-No.4 Current — published value 2
25
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Grid-No.2 Current — published value 1
-15
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Grid-No.2 Current — published value 2
15
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
With ultor voltage of
18000 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Grid-No.4 Voltage for focus — published value 1
-75 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Grid-No.4 Voltage for focus — published value 2
400 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
extinction of focused raster — published value 1
-35 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
extinction of focused raster — published value 2
-72 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
With any ultor-to-grid-No.1 voltage (Ecg g1 1 between la000
1 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
and 20000 volts and grid-No. a-to-grid-No.1 voltage (Eczg1)
20000 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
for focus§ — published value 1
-75 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
for focus§ — published value 2
400 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Grid-No.4 Current — published value 1
25
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Grid-No.4 Current — published value 2
25
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Grid-No.2 Current — published value 1
15
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Grid-No.2 Current — published value 2
15
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Voltage for focus — published value 1
75 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Voltage for focus — published value 2
40 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
of focused raster — published value 1
33 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
of focused raster — published value 2
60 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
lute siniwuw allot-or allot-to-grid-x o.1 voltage is 11,000 volts, De — published value 1
11 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
lute siniwuw allot-or allot-to-grid-x o.1 voltage is 11,000 volts, De — published value 2
0 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
deflected focused Spot will fall within a tittle having a 1/2-i ncn — published value 1
1
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
deflected focused Spot will fall within a tittle having a 1/2-i ncn — published value 2
2
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
ULTOR VOLTS=12000 TO 20000 — published value 1
12000 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
ULTOR VOLTS=12000 TO 20000 — published value 2
20000 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
ULTOR-TO-GRID-NQIVOLTS=12000 TO 20000 — published value 1
12000 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
ULTOR-TO-GRID-NQIVOLTS=12000 TO 20000 — published value 2
20000 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
SCREEN WIDTH
21
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
UITOR-TO-GRID- Ngl VOLTS= I6000
16000 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
RESPECT 70 GRID NCI TO GIVE
70
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
ULTOR-TO-GRID-Nsl VOLTS= — published value 1
12000 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
ULTOR-TO-GRID-Nsl VOLTS= — published value 2
20000 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
12000 TO 20000 GRID NQI BIASED NEGATIVE. WITH — published value 1
12000
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
12000 TO 20000 GRID NQI BIASED NEGATIVE. WITH — published value 2
20000
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.

Other

External conductive coating to ultor
2500 mA
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
GRID-No.2 VOLTAGE
500 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Heater positive with respect to cathode
180 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Grid-No.l-Circuit Resistance
1.5 mA
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
ULTOR-TO-GRID-No.l VOLTAGE
20000 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
GRID-No.2-TO-GRID-No.l VOLTAGE
640 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
GRID-No.2-TO-CATHODE VOLTAGE
500 V
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.
Grid—No.l—Circuit Resistance
1.5 mA
Published CRT datasheet value; multiple numbers on one source row represent separate limits or operating conditions.