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 21AWP4.
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 anode voltage
18000 V
Maximum grid 2 voltage
500 V
Typical grid 2 voltage
500 V
Typical operating conditions
Diagonal deflection angle
12 deg
Cathode to all other electrodes
4 pF
Approximate
Data set 02
Published operating points and test conditions from this source.
GRID k1 TO ALL OTHER ELECTRODES
6
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
EXTERNAL' CONDUCTIVE COATING TO ANODE (MAX.)A — value 1
1 mA
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
EXTERNAL' CONDUCTIVE COATING TO ANODE (MAX.)A — value 2
500 mA
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
EXTERNAL CONDUCTIVE COATING TO ANODE (MIN.)A
1
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
FACEPLATE LIGHT TRANSMISSION AT CENTER (APPROX.)
1 percent
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
HEATER
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.
DC ANODE VOLTAGE
16 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
DC GRID N2 VOLTAGE
3 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
DC GRID Ni VOLTAGE U — value 1
2 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
DC GRID Ni VOLTAGE U — value 2
2 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
DC FOCUSING COIL CURRENT (APPROX.)C
2 mA
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
ION TRAP MAGNET STRENGTH (APPR O.X.)
35 mA
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
SIGNAL VOLTAGE AO JU STEO TO PRO OU CE A MI GNI IGNT BRI GX TXESS OF 20 f001 LAN8 ER T5 OM A 19 1/R" BY — value 1
20 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
SIGNAL VOLTAGE AO JU STEO TO PRO OU CE A MI GNI IGNT BRI GX TXESS OF 20 f001 LAN8 ER T5 OM A 19 1/R" BY — value 2
19 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
SIGNAL VOLTAGE AO JU STEO TO PRO OU CE A MI GNI IGNT BRI GX TXESS OF 20 f001 LAN8 ER T5 OM A 19 1/R" BY — value 3
1 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
15"•PICTURE SIZE. DISTANCE FROM REFER EM CE LINE TO CENTER OF AIR GAP ON FOCUS COIL SM AIL BE )
15
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
MAXIMUM DC ANODE VOLTAGE
1 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 M1 CIRCUIT RESISTANCE
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