Specialized - Cathode Ray ·CathodeRay
Large P4 monochrome television picture tube documented for high-voltage direct-view service, using magnetic deflection and manufacturer-specified focusing and beam-control arrangements for type 21AVP4B.
Direct-view cathode-ray picture tube for television display service. Electrical ratings, operating conditions, capacitances, optical data, and construction details were extracted from the supplied datasheet.
Duodecar 12-contact
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
Published CRT ratings, operating conditions, capacitances, optical and deflection data are retained in parameter rows.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Heater voltage
6.3 V
Nominal
Heater current
600 mA
Nominal
Maximum grid 2 voltage
0 V
Typical grid 2 voltage
0 V
Typical operating conditions
Horizontal deflection angle
67 deg
Diagonal deflection angle
72 deg
Cathode to all other electrodes
5 pF
Approximate
Data set 02
Published operating points and test conditions from this source.
GRID #1 TO ALL OTHER ELECTRODES — value 1
1
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
GRID #1 TO ALL OTHER ELECTRODES — value 2
6
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
MINIMUM EXTERNAL CONDUCTIVE COATING TO ANODE
750
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
HEATER VOLTAGE
6.3 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
HEATER POSITIVE WITH RESPECT TO CATHODE
1 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
OC ANODE, GR tO #} 1 GRID #5 VOLTA GE A — value 1
1 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
OC ANODE, GR tO #} 1 GRID #5 VOLTA GE A — value 2
5 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
OC ANODE, GR tO #} 1 GRID #5 VOLTA GE A — value 3
1 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
DC GRID #4 VOLTA GEB — value 1
4 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
DC GRID #4 VOLTA GEB — value 2
72 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
DC GRID #4 VOLTA GEB — value 3
396 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
OC GRID #2 VOLTAGE — value 1
2 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
OC GRID #2 VOLTAGE — value 2
3 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
DC GRID #1 VOLTAGE C — value 1
1 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
DC GRID #1 VOLTAGE C — value 2
2 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
DC GRID #1 VOLTAGE C — value 3
72 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
VOLTAGE SHOULD MO BE LESS TM AM 14,000 VOLTS• — value 1
14 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
VOLTAGE SHOULD MO BE LESS TM AM 14,000 VOLTS• — value 2
0 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
BFOR FOCUS WI TM ANO OE CU RR EMT OF 100 LL ANP S•
100
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
C ON0I TIOMG INVOLVE VOLTAGE IN EXCESS OF 16 KILOVOLT S•
16 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
MAXIMUM EXTERNAL CONDUCTIVE COATING TO ANODE
1500 mA
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
MAXIMUM DC ANODE, GRID #}, GRID #5 VOL TA GE A 2O OOO — value 1
5 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
MAXIMUM DC ANODE, GRID #}, GRID #5 VOL TA GE A 2O OOO — value 2
2 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
MAXIMUM DC ANODE, GRID #}, GRID #5 VOL TA GE A 2O OOO — value 3
1 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
MAXIMUM DC GRID #4 VOLTAGE
4 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
MAXIMUM DC GRID #2 VOLTAGE — value 1
2 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
MAXIMUM DC GRID #2 VOLTAGE — value 2
5 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
MAXIMUM GRID #1 VOLTAGE
1 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
MAXIMUM GRID #1 CIRCUIT RESISTANCE — value 1
1 mA
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
MAXIMUM GRID #1 CIRCUIT RESISTANCE — value 2
1.5 mA
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
Data set 03
Published operating points and test conditions from this source.
Typical Anode Voltage
16000 V
Typical Grid No. 2 Voltage
300 V
Grid No. 1 Maximum Negative Bias
125 V
Grid No. 1 Maximum Positive Peak
2 V