CX1594 [ETC]
Deuterium Filled, Hollow Anode, Five-Gap Ceramic Thyratron; 氘填充，空心阳极，五峡陶瓷闸流管
| 型号： | CX1594 |
| 厂家： | 
ETC |
| 描述： | Deuterium Filled, Hollow Anode, Five-Gap Ceramic Thyratron |
| 文件： | 总7页 (文件大小：84K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
E2V Technologies
CX1594 Deuterium Filled,
Hollow Anode, Five-Gap Ceramic Thyratron
The data to be read in conjunction with the Hydrogen
Thyratron Preamble.
Mechanical
Seated height
(flange to flange)
Clearance required
below flanges .
Overall diameter
.
.
.
.
.
.
566.0 mm (22.283 inches) max
. 57.15 mm (2.250 inches) min
152.4 mm (6.000 inches) nom
ABRIDGED DATA
Hollow anode, deuterium filled, five-gap thyratron with ceramic
envelope, featuring high peak current, high rate of rise of
current, low jitter and voltage/current reversal.
.
(mounting flange)
Net weight
.
.
.
.
.
.
.
.
.
.
.
.
.
13 kg (29 pounds) approx
The patented hollow anode structure enables the tube to cope
with inverse voltage and current without consequent reduction
in its high voltage hold-off capability due to electrode damage.
Mounting position (see note 3) .
Tube connections
.
.
.
.
.
.
.
.
.
.
.
.
any
. . . . .
see outline
A reservoir normally operated from a separate heater supply is
incorporated. The reservoir heater voltage can be adjusted to a
value consistent with anode voltage hold-off in order to achieve
the fastest rate of rise of current possible from the tube in the
circuit.
Cooling
For all applications, cooling by oil or coolant immersion is
desirable. Further information is contained in the relevant
section of the Preamble.
At and below 55 kV the CX1594 may be cooled by forced-air
directed mainly onto the base, and the ceramic envelope should
be maintained below the maximum rated temperature. An air
flow of at least 2.83 m3/min (100 ft3/min), depending on the
mechanical layout, will be necessary to keep the tube operating
temperatures under the limits specified below.
Modulator Service
Peak anode voltage (see note 1)
Peak forward anode current .
Peak reverse anode current .
Average anode current
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
150
10
kV max
kA max
kA max
A max
.
.
.
.
5
.
.
.
3.0
In addition to 300 W of heater power, the tube dissipates from
100 W per ampere average anode current, rising to 300 W/A at
the highest rates of rise and fall of anode current.
Crowbar Service
Peak anode voltage (see note 1)
Peak forward anode current .
Peak reverse anode current .
Conducted charge .
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
125
kV max
kA max
kA max
C max
.
.
.
40
20
18
The cathode end of the tube must be cooled whenever heater
voltages are applied, since the cathode flange will reach a
temperature of 120 8C above ambient in the absence of cooling.
. . .
Envelope temperature:
GENERAL
Electrical
ceramic, anode and grids .
cathode flange and base
.
.
.
.
.
.
.
.
.
.
150
120
8C max
8C max
.
Cathode (connected internally
to one end of heater)
Cathode heater voltage
Cathode heater current
Reservoir heater voltage (see note 2) .
Reservoir heater current
.
.
.
.
.
.
.
.
.
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.
.
.
.
.
.
.
.
.
.
.
oxide coated
+ 0.3
6.3
V
7 0.0
.
.
.
.
.
.
.
.
40
5.0
A
V
.
.
.
.
.
.
.
.
.
10
15
A
min
Tube heating time (minimum)
Inter-electrode capacitances
(each gap) .
.
.
.
.
.
.
.
.
.
.
40 pF approx
E2V Technologies Limited, Waterhouse Lane, Chelmsford, Essex CM1 2QU England Telephone: +44 (0)1245 493493 Facsimile: +44 (0)1245 492492
e-mail: enquiries@e2vtechnologies.com Internet: www.e2vtechnologies.com Holding Company: E2V Holdings Limited
E2V Technologies Inc. 4 Westchester Plaza, PO Box 1482, Elmsford, NY10523-1482 USA Telephone: (914) 592-6050 Facsimile: (914) 592-5148
e-mail: enquiries@e2vtechnologies.us
#E2V Technologies Limited 2002
A1A-CX1594 Issue 2, October 2002
527/5640
Cathode
MAXIMUM AND MINIMUM RATINGS
Min
Max
+ 0.3
7 0.0
These ratings cannot necessarily be used simultaneously, and
no individual rating must be exceeded.
Heater voltage .
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
6.3
15
V
Heating time
.
–
min
Anode (Pulse Modulator Service)
(See notes 4 and 5)
Reservoir
Heater voltage (see note 2) .
Min Typical Max
.
.
.
.
.
.
4.5
15
6.5
–
V
min
Peak forward or inverse anode
Heating time
.
.
.
.
.
voltage (see notes 1 and 6) .
.
.
.
.
–
–
–
–
–
–
–
–
150
10
5
kV
kA
kA
A
Peak forward anode current
Peak reverse anode current .
.
.
.
Environmental
Ambient temperature .
Altitude
.
.
.
.
.
.
.
.
.
.
750
+90
3
8C
km
ft
Average anode current
.
.
3.0
.
.
.
.
.
.
–
Rate of rise of anode current
–
10 000
(see notes 7 and 8) .
Pulse repetition rate
.
.
.
.
.
.
.
.
–
–
10
–
–
kA/ms
(see note 4)
.
.
.
100
pps
CHARACTERISTICS
Min Typical Max
Anode (Single-Shot or Crowbar Service)
(See note 9)
Critical DC anode voltage for
conduction (see note 13) .
Anode delay time
.
.
.
.
–
–
7.0
10.0
0.35
kV
DC forward anode voltage .
.
.
.
.
.
.
.
.
.
.
125
40
kV max
kA max
Peak anode current
Conducted charge:
capacitor discharge
.
.
.
.
.
(see notes 13 and 14) .
Anode delay time drift
(see notes 13 and 15) .
Time jitter (see note 13) .
Cathode heater current
.
0.15
ms
.
.
.
.
.
.
.
.
.
.
.
.
0.6
18
C max
C max
.
.
.
.
.
.
–
–
15
1.0
50
5.0
ns
ns
crowbar service (see note 10)
Repetition frequency .
.
.
.
. 1 pulse per 10 s max
(at 6.3 V) .
Reservoir heater current
(at 5.0 V) .
.
.
.
.
.
.
.
.
35
40
10
45
12
A
A
Grid 2
.
.
.
.
.
8.0
Min
Max
2000
Unloaded grid 2 drive pulse voltage
NOTES
(see note 11) .
Grid 2 pulse duration .
.
.
.
.
.
.
.
.
.
.
.
.
500
1.0
V
ms
1. At and below 55 kV the CX1594 may be operated in air.
Above this level the tube must be operated in oil or coolant
immersed.
.
–
Rate of rise of grid 2 pulse
(see note 8)
Grid 2 pulse delay .
Peak inverse grid 2 voltage .
Loaded grid 2 bias voltage
Forward impedance of
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
10
0.5
–
–
3.0
450
kV/ms
.
.
ms
V
V
2. The reservoir heater must be decoupled with suitable
capacitors to avoid damage by spike voltages. The
recommended reservoir heater voltage is stamped on
individual tube envelopes.
.
750 7150
grid 2 drive circuit
.
.
.
.
.
.
50
500
O
3. The tube must be mounted using its mounting flange.
4. Triggered charging techniques are recommended because
Grid 1 – DC Primed (See note 9)
the tube has a relatively long recovery time (100 – 200 ms).
DC grid 1 unloaded priming voltage .
DC grid 1 priming current
75
75
150
150
V
mA
5. Pre-pulsing of grid 1 is recommended for modulator and
high rate of rise of current applications.
.
.
.
.
6. This is the maximum hold-off voltage in either direction
before the tube is triggered. The maximum permissible
peak forward voltage for instantaneous starting is 100 kV
and there must be no overshoot.
Grid 1 – Pulsed (See notes 5, 9 and 12)
Unloaded grid 1 drive pulse voltage
(see note 11) .
Grid 1 pulse duration .
.
.
.
.
.
.
.
.
.
.
.
.
400
2.0
1000
–
V
ms
7. For single-shot or burst mode applications this parameter
can exceed 100 kA/ms. The ultimate value which can be
attained depends to a large extent upon the external
circuit.
.
Rate of rise of grid 1 pulse
(see note 8)
Peak inverse grid 1 voltage .
Loaded grid 1 bias voltage
Peak grid 1 drive current
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
1.0
–
–
kV/ms
450
V
8. This rate of rise refers to that part of the leading edge of
the pulse between 25% and 75% of the pulse amplitude.
.
.
.
.
.
see note 12
1.5
0.5
A
CX1594, page 2
#E2V Technologies
9. When DC priming is used on grid 1, a negative bias of 100
to 150 V must be applied to grid 2 to ensure anode voltage
hold-off. DC priming is recommended for crowbar service.
HEALTH AND SAFETY HAZARDS
E2V Technologies hydrogen thyratrons are safe to handle and
operate, provided that the relevant precautions stated herein are
observed. E2V Technologies does not accept responsibility for
damage or injury resulting from the use of electronic devices it
produces. Equipment manufacturers and users must ensure that
adequate precautions are taken. Appropriate warning labels and
notices must be provided on equipments incorporating E2V
Technologies devices and in operating manuals.
10. In crowbar service, most of the coulombs are often in the
power supply follow-on current rather than the storage
capacitor discharge.
11. Measured with respect to cathode. When grid 1 is pulse
driven, the last 0.25 ms of the top of the grid 1 pulse must
overlap the corresponding first 0.25 ms of the top of the
delayed grid 2 pulse. (See schematic diagram, page 5).
12. DC negative bias voltages must not be applied to grid 1.
When grid 1 is pulse driven, the potential of grid 1 may
vary between 710 and +5 V with respect to cathode
potential during the period between the completion of
recovery and the commencement of the succeeding grid
pulse.
High Voltage
Equipment must be designed so that personnel cannot come
into contact with high voltage circuits. All high voltage circuits
and terminals must be enclosed and fail-safe interlock switches
must be fitted to disconnect the primary power supply and
discharge all high voltage capacitors and other stored charges
before allowing access. Interlock switches must not be
bypassed to allow operation with access doors open.
13. Typical figures are obtained on test using conditions of
minimum grid 2 drive. Improved performance can be
expected by increasing grid drive.
14. The time interval between the instant at which the rising
unloaded grid 2 pulse reaches 25% of its pulse amplitude
and the instant when anode conduction takes place.
X-Ray Radiation
All high voltage devices produce X-rays during operation and
may require shielding. The X-ray radiation from hydrogen
thyratrons is usually reduced to a safe level by enclosing the
equipment or shielding the thyratron with at least 1.6 mm
( 1/16 inch) thick steel panels.
15. The drift in delay time over a period from 10 seconds to
10 minutes after reaching full voltage.
Users and equipment manufacturers must check the radiation
level under their maximum operating conditions.
#E2V Technologies
CX1594, page 3
SCHEMATIC DIAGRAM (Crowbar Service)
7252
ANODE (+)
R2
R1
R1
R2
R1
R1
R2
R1
R1
R2
R1
R1
R2
R3
G2
TRIGGER
PULSE
C1
G1
150 V dc
SUPPLY
CATHODE
HEATER
SUPPLY
R4
C2
C3
RESERVOIR
HEATER
SUPPLY
7150 V BIAS
(VARIABLE)
CATHODE (7)
R1
R2
=
=
470 O 12 W vitreous enamelled wirewound resistors.
10 to 25 MO high voltage resistors with a power rating consistent with forward anode voltage.
R3
=
Grid 2 series resistor. 12 W vitreous enamelled wirewound is recommended, of an impedance to match the grid 2 drive
pulse circuit.
R4
=
=
=
=
=
Grid 1 series resistor. 12 W vitreous enamelled wirewound is recommended.
500 to 1000 pF capacitor with a voltage rating 530 kV.
Reservoir protection capacitors with a voltage rating 5500 V;
1000 pF low inductance (e.g. ceramic),
C1
C2, C3
C2
C3
1 mF (e.g. polycarbonate or polypropylene).
Components R3, R4, C2, and C3 should be mounted as close to the tube as possible.
CX1594, page 4
#E2V Technologies
SCHEMATIC DIAGRAM (Modulator Service)
7251
ANODE (+)
R1
R2
C1
R1
R1
R2
R2
C1
C1
R1
R1
GRID 2 DELAYED
WITH RESPECT TO GRID 1
R1
R1
GRID 2 VOLTAGE
500 – 2000 V,
1 ms
R2
R2
C1
C1
R1
R1
R3
0
G2
NEGATIVE BIAS VOLTAGE
GRID 0/GRID 1 CURRENT
0.5 – 1.5 A,
2 ms
R4
G1
CATHODE
HEATER
SUPPLY
0.5 ms MIN
GRID 1/GRID 2 DELAY
C2
C3
RESERVOIR
HEATER
SUPPLY
(VARIABLE)
CATHODE (7)
R1
R2
=
=
470 O 12 W vitreous enamelled wirewound resistors.
5 to 20 MO high voltage resistors with a power rating consistent with forward anode voltage.
R3
R4
C1
=
=
=
Grid 2 series resistor. 12 W vitreous enamelled wirewound is recommended, of an impedance to match the grid 2 drive
pulse circuit.
Grid 1 series resistor. 12 W vitreous enamelled wirewound is recommended, of an impedance to match the grid 1 drive
pulse circuit.
500 pF capacitors with a voltage rating equal to the peak forward voltage. These capacitors may be required to
balance the voltages across each gap if the anode voltage rises in less than 5 ms.
C2, C3
C2
=
=
=
Reservoir protection capacitors with a voltage rating 5500 V;
1000 pF low inductance (e.g. ceramic),
C3
1 mF (e.g. polycarbonate or polypropylene).
Components R3, R4, C2, and C3 should be mounted as close to the tube as possible.
#E2V Technologies
CX1594, page 5
OUTLINE
(All dimensions without limits are nominal)
7250
1C
ANODE CONNECTION
FITTED WITH
1
/ -20 UNC SCREW
4
ALL GRID CONNECTIONS
FITTED WITH
8–32 UNC SCREWS
A
U
T
S
R
GRID 2
Q
P
N
M
L
D
SEE
NOTE 2
MOUNTING FLANGE
SEE NOTE 1
1F
SEE NOTE 3
GRID 1 LEAD (GREEN)
G LONG, TAG TO SUIT 1H
RESERVOIR HEATER LEAD (RED)
G LONG, TAG TO SUIT 1H
1B
4 MOUNTING HOLES 1J
EQUISPACED ON K PCD
CATHODE HEATER LEAD (YELLOW)
G LONG, TAG TO SUIT 1H
CX1594, page 6
#E2V Technologies
Ref
Millimetres
Inches
A
B
C
D
F
566.0 max
152.4
22.283 max
6.000
147.0
5.787
3.18
0.125
106.36 max
177.8 min
6.35
4.187 max
7.000 min
0.250
G
H
J
8.0
0.315
K
L
135.74
119.9
5.344
4.720
M
N
P
197.8
7.787
216.0
8.504
285.5
11.240
11.957
14.693
15.409
18.146
18.870
Q
R
S
T
303.7
373.2
391.4
460.9
U
479.3
Inch dimensions have been derived from millimetres.
Outline Notes
1. The mounting flange is the connection for the cathode,
cathode heater return and reservoir heater return.
2. A minimum clearance of 57.15 mm (2.250 inches) must be
allowed below the mounting flange.
3. The recommended mounting hole is 108 mm (4.25 inches)
diameter.
4. The holes for all grid connections will be in line with the hole
in the mounting flange to within 108 either side of the hole
centre.
Whilst E2V Technologies has taken care to ensure the accuracy of the information contained herein it accepts no responsibility for the consequences of any use
thereof and also reserves the right to change the specification of goods without notice. E2V Technologies accepts no liability beyond that set out in its standard
conditions of sale in respect of infringement of third party patents arising from the use of tubes or other devices in accordance with information contained herein.
#E2V Technologies
Printed in England
CX1594, page 7
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