Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Cathode Ray
Other
HighVoltageAnodeMaximum
20000 V
CRT
Capacitance
CathodeToOtherElectrodesCapacitance
5 pF
Approximate
Specialized - Cathode Ray ·CathodeRay
21CGP4
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 21CGP4.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- B12D
- Base pins
- 12
- Nominal heater
- 6.3 V / 600 mA
Description
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.
Socket description
Duodecar 12-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B12D
- Base pins
- 12
- 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
- 200 V
Published promoted fields populated by printed ratings/characteristics headings.
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 02
1966 Tung Sol Electronic Tubes 4 of 4
Published operating points and test conditions from this source.
SECTION 1
Cathode Ray
Characteristics
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
1
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
MINIMUM EXTERNAL CO NO UCTIVE COATING TO ANODE
2000
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
HEATER
18 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
Dc ANODE voLTAGE*
1 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
DC GRID — value 1
4 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
DC GRID — value 2
3 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
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.
DC GRID #2 VOLTAGE — value 2
11 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
DC GRID #i VOLTAGF B
32 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
THIS TUBE MAY 6E OPER ATEC IN GRID DRIVE IF DESIRED, WITH SOME LOSS INEFFICIENCY. AVERAGE RASTER
6 mA
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
CUTOFF, WITH GRID Oft IVE S MAY BE CAL GUI ATED: Eglco= .502 Egg+5.8
5.8 mA
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
Other
MAXIMUM EXTERNAL CONDUCTIVE COATING TO ANODE
2500 mA
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
MAXIMUM DC ANODE
20 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
MAXIMUM DC GRID #4 VOLTAGE — value 1
4 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
MAXIMUM DC GRID #4 VOLTAGE — value 2
500 V
Published CRT datasheet value; multiple values on a row correspond to separate source-table conditions or limits.
MAXIMUM DC GRID #4 VOLTAGE — value 3
1000 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
200 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.