Data set 01
1940 RCA
Published operating points and test conditions from this source.
Cathode Ray
Other
L RMA release #
399 mA
L RMA release # 399,
Anode No
2000 V
Anode No.2 Voltage 1500 2000 volts
a fluorescent viewing screen five inches in dia— Anode
0.1 in
a fluorescent viewing screen five inches in dia— Anode 0.1 voltage for Focus
meter. This tube, designed for oscillographic at
75 V
meter. This tube, designed for oscillographic at 75% of Grid Voltage for
Cut
338 V
Cut-0ff # 338 uso0 volts
trostatic electrodes for deflection of the elec— off ##
35 V
trostatic electrodes for deflection of the elec— off ## -26 ~35 volts
tron beam. The
0.221 V
tron beam. The 905 produces a brilliant lumin- DJy and DJ 0.295 0.221 mm/volt d.c.
ous spot having a greenish hue, and is suitable DJg and DJdy
0.262 V
ous spot having a greenish hue, and is suitable DJg and DJdy 0.3u9 0.262 mm/volt d.c.
for the observation and photography of recurrent DJy and DJp
115 V
for the observation and photography of recurrent DJy and DJp 86.2 115 volts d.c./in.
and transient phenomena,. DJ3 and DJy
97 V
and transient phenomena,. DJ3 and DJy 72.7 97 volts d.c./in.
and two anodes constitute an electron gun which less than
1500 V
and two anodes constitute an electron gun which less than 1500 volts.
HEATER VOLTAGE (A.C or D.c.)
5 V
HEATER VOLTAGE (A.C or D.c.) 2 .5 volts
Electrodes DJ3 and DJy lower): nearest to base The heater is designed to operate at
2.5 V
Electrodes DJ3 and DJy lower): nearest to base The heater is designed to operate at 2.5 volts.
Electrodes
9 pF
Electrodes 9.0 upf
flecting Electrode DJ
2 pF
flecting Electrode DJ 2.0 uuf equately insulated towithstand the high voltage.
flecting Electrode DJj
1 pF
flecting Electrode DJj 1.0 ppf The cathode is connected within the tube to
ANODE No
2 V
ANODE No.2 (High-voltage Electrode) vacuum-tube rectifier. Since a cathode-ray tube
VOLTAGE
2200 V
VOLTAGE 2200 max. Volts
VOLTAGE
660 V
VOLTAGE 660 max., Volts
RANGE never positive) to
-125 V
RANGE never positive) to -125 max. Volts age doubler type. Likewise, the filter require~
PEAK VOLTAGE BETWEEN ANODE No
2 V
PEAK VOLTAGE BETWEEN ANODE No.2
and ANY DEFLECTING ELECTRODE
2 V
and ANY DEFLECTING ELECTRODE 1100 max. Volts ments are simple. A 0.5 to 2 pf condenser will
GRID~CIRCUIT RES!STANCE
1.5 ohm
GRID~CIRCUIT RES!STANCE 1.5 max. Megohms ordinarily provide sufficient filtering. If this
THESE CURVES ARE GENERAL FOR CATHODE-RAY TYPES] electrodes for typical anode No
2 V
: THESE CURVES ARE GENERAL FOR CATHODE-RAY TYPES] electrodes for typical anode No.2 voltages is
3 0.20 recommended that the positive high-voltage ter-
0.2 V
3 0.20 recommended that the positive high-voltage ter-
4 - respect to ground, +ihe dangerous voltages can
4 V
4 - respect to ground, +ihe dangerous voltages can
HIGH-VOLTAGE ELECTRODE (ANODE N2
20 V
HIGH-VOLTAGE ELECTRODE (ANODE N22) KILOVOLTS 3 o020 of
zero axis should be permanently deflected, it is HIGH -VOLTAGE ELECTRODE (ANODE Ne
2 V
zero axis should be permanently deflected, it is HIGH -VOLTAGE ELECTRODE (ANODE Ne 2) MICROAMP,
C, = FILTER CONDENSER
0.125 ohm
C, = FILTER CONDENSER 0.5 TO 2 uf R, - 0.125 MEGOHM
R, - 0.45 MEGOHM Rg — SEE TEXT, PAGE 2 ~ 100
100 ohm
R, - 0.45 MEGOHM Rg — SEE TEXT, PAGE 2 ~ 100
Ry - 0.10 MEGOHM V — VOLTMETER =80
80 ohm
Ry - 0.10 MEGOHM V — VOLTMETER =80
densers C,C3C)Cq should have a high voltage rating. =
40 V
densers C,C3C)Cq should have a high voltage rating. =40
be low-voltage condensers
4 V
be low-voltage condensers. 4
is usually adequate. A variable d-c¢ voltage for
5 V
is usually adequate. A variable d-c¢ voltage for 5 N
TIME - SECONDS
5380 s
TIME - SECONDS 92C-5380
ratio of anode No
2 V
ratio of anode No.2 voltage to anode No.l volt-— screen if the spot is allowed to remain station-
ment of anode No.!| voltage. mended that +the beam be kept
1 V
ment of anode No.!| voltage. mended that +the beam be kept 1in motion by the
accomplished by varying anode No
2 V
accomplished by varying anode No.2 current and/ by adjustment of the control-eliectrode voltage.
or voltage. The current to anode No
2 V
or voltage. The current to anode No.2 may be The spot may also be prevented from burning the
increase d by decreasi ng the bias voltage applied screen by removal of the voltage from anode No
2 V
increase d by decreasi ng the bias voltage applied screen by removal of the voltage from anode No.2.
HEf=
4 V
HEf=2.5 VOLTS 4 SMALL .
Il ANODE N2! .VOLTS ADJUSTED TO GIVE FOCUS ] Ne
3 V
Il ANODE N2! .VOLTS ADJUSTED TO GIVE FOCUS ] Ne 3907 DJ3 +3y ,
Characteristic
€3 C3 € Cg — SEE NOTE BELOW R2 - 0.025 MEGOHM PERSISTENCE CHARACTERIST
0.025 ohm
€3 C3 € Cg — SEE NOTE BELOW R2 - 0.025 MEGOHM PERSISTENCE CHARACTERISTIC