Data set 01
1940 RCA
Published operating points and test conditions from this source.
Cathode Ray
Other
Low-Voltage Electro
8 V
Low-Voltage Electro- 7-3/16" x 5-3/8" Screen
projected screen area of
-21 in
projected screen area of 36 square inches. Cap Designation. mxemmdsmfl1cawty {EDEC NO.J1-21)
Cathode to all other electrodes
18000 pF
Cathode to all other electrodes . . 5 ppf ANODE VOLTAGE. 18000 max. volis
Grid No
4 V
Grid No.1 to all other electrodes . 61 prpaf GRID=NO.4 VOLTAGE:
Heater Current at
1100 V
Heater Current at 6.3 volts - 600 % 30 ma Pasitive value . 1100 max. volts
Heater Warm-up Tlme.(Avgrage)_. <
550 s
Heater Warm-up Tlme.(Avgrage)_. <. 1 seconds Negative value . . . . . . . . . . 550 max. volts
Heater warm-up time is defined as the time required
550 V
Heater warm-up time is defined as the time required 550 max. volts
in the test circuit shown in Fig
2 V
in the test circuit shown in Fig.1 for the voltage gGRIp-NO.2 VOLTAGE. . . « + « « « « . oo
zero to
1 V
zero to 5 voils, N GRID-NO.1 VOLTAGE:
Electron Gun. . Type Requiring No lon-Trap Magnet Negative peak value,
220 V
Electron Gun. . Type Requiring No lon-Trap Magnet Negative peak value, . . . . . . . 220 max. volts
Optical: Negative bias value
155 V
Optical: Negative bias value. 155 max. volts
Faceplate . . .Ftlterg1ass Positive peak value,
2 V
Faceplate . . .Ftlterg1ass Positive peak value, . . . . . . . 2 max. volts
Light transmission at center (Aonrox ). S
2 V
Light transmission at center (Aonrox ). S . 803 iR VOLTAGEb- L {:-j 2?:' :zzi:
Neck length
450 s
Neck length . . 5-13/16" * 1/8" not exceeding 15 seconds . . . 450 max. wvolts
Minimum Screen Dimensions {Projected). Combined AC & DC voltage
200 V
Minimum Screen Dimensions {Projected). Combined AC & DC voltage . . . . 200 max. valls
Diagonal
100 V
Diagonal. . . . 7-3/y4" OC Component . . . . . . . . .. 100 max. volts
anode voltages up to
16 V
anode voltages up to 16 kilovolts, this
Anode voltage
16000 V
Anode voltage . . . . . . . . . . 16000 volts
Grid-No
200 V
Grid-No.4 voltage™. . . . . . . .. 200 volts
Grid-No
300 V
Grid-No.2 Voltage . . . . . . . . . 300 volts
Grid-No
1 V
Grid-No.1 Voltage for Visua
extinction of focused at voitages as high as
18 V
extinction of focused at voitages as high as 18 kilovolts
raster (See Fig
-72 V
raster (See Fig.2). .~28 L0 -72 volts {design-maximum value), shielding of the
Grid-No.t Circuit Resistance
1.5 V
Grid-No.t Circuit Resistance. 1.5 max. megahms the operating conditions involve voltages
in excess of
16 V
in excess of 16 kilovolts.
Design-Maximum ratingsare
3.5 ohm
Design-Maximum ratingsare 1imiting valuesofoperating 3.5 OHMS
Measured between the heater terminals. ;=
63 V
Measured between the heater terminals. ;=63 VOLTS
ANODE VOLTS =(
18000 V
ANODE VOLTS =(0000 TQ 18000
GRID-No
4 V
GRID-No.4 VOLTS ADJUSTED FOR FOCUS,
The grid-No
-125 V
The grid-No.4 voltage required for optimum focus of -125
0 ang +400 volts.
400 V
0 ang +400 volts.
magnet should not exceed
4 in
magnet should not exceed 2-i/4 inches. The specitied
16000 volts o]
16000 V
16000 volts o]
GRID-MNo
2 V
GRID-MNo.2 VOLTS
ABOUT THE TUBE aAXIS) OF £
8 in
ABOUT THE TUBE aAXIS) OF £ 30 ANODE TERMINAL 15 DIAMETER OF 1-5/8 INCHES.