E2V Technologies
CX1157
(Service Type CV6241)
Hydrogen-Filled Ceramic Thyratron
The data to be read in conjunction with the Hydrogen
Thyratron Preamble.
PULSE MODULATOR SERVICE
MAXIMUM AND MINIMUM RATINGS
(Absolute values)
Min
Max
ABRIDGED DATA
Hydrogen-filled tetrode thyratron with ceramic envelope,
featuring low jitter and low anode delay time drift. Suitable for
use at high pulse repetition rates and in applications requiring
ruggedness and compactness. A hydrogen reservoir operating
from the heater supply is incorporated.
Peak forward anode voltage . . . . . . 20
kV max
Peak anode current . . . . . . . . 350
A max
Average anode current . . . . . . . 500
mA max
9
Anode heating factor . . . . . . 7.0 x 10 VApps max
Peak output power . . . . . . . . .
3.5 MW max
Anode
Peak forward anode voltage
(see note 3) . . . . .
Peak inverse anode voltage
(see note 4) . . . . .
Peak anode current . . .
Average anode current . .
Rate of rise of anode current
(see notes 5 and 6) . . .
Anode heating factor . . .
. . . . 鈥?/div>
. . . . 鈥?/div>
. . . . 鈥?/div>
. . . . 鈥?/div>
. . . . 鈥?/div>
. . . . 鈥?/div>
20
20
350
500
kV
kV
A
mA
2500 A/ms
7.0 x 10
9
VApps
GENERAL
Electrical
Cathode (connected internally to
one end of heater) . . . .
Cathode heater voltage . . .
Cathode heater current . . .
Reservoir heater voltage (see note
Reservoir heater current . . .
Tube heating time (minimum) .
.
.
.
1)
.
.
.
.
.
.
.
.
. . . oxide coated
V
6.3
+
7
1
/
2
%
. .
7.5
A
6.3
+
7
1
/
2
%
V
. .
1.5
A
. .
3.0
min
Grid 2
Unloaded grid 2 drive pulse voltage
(see note 7) . . . . . . .
Grid 2 pulse duration . . . . .
Rate of rise of grid 2 pulse (see note
Grid 2 pulse delay . . . . . .
Peak inverse grid 2 voltage . . .
Loaded grid 2 bias voltage
(see note 8) . . . . . . .
Forward impedance of
grid 2 drive circuit . . . . .
.
.
6)
.
.
200
. 1.0
. 1.0
. 0.5
. 鈥?/div>
750
.
100
750
V
鈥?/div>
ms
鈥?kV/ms
3.0
ms
200
V
7200
1000
V
O
Mechanical
Seated height . . . .
Clearance required below
mounting flange . . .
Overall diameter
(mounting flange) . .
Net weight . . . . .
Mounting position (see note
Tube connections . . .
. . 76.2 mm (3.000 inches) max
. . 31.75 mm (1.250 inches) min
.
57.15 mm (2.250 inches) nom
. . . 284 g (10 ounces) approx
2) . . . . . . . . . any
. . . . . . . . see outline
Grid 1 鈥?DC Primed (See note 9)
DC grid 1 unloaded priming voltage .
DC grid 1 priming current . . . .
75
50
150
150
V
mA
Grid 1 鈥?Pulsed (See note 10)
Unloaded grid 1 drive pulse voltage
(see note 7) . . . . . . .
Grid 1 pulse duration . . . . .
Rate of rise of grid 1 pulse (see note
Peak inverse grid 1 voltage . . .
Loaded grid 1 bias voltage . . .
Peak grid 1 drive current . . . .
.
.
6)
.
.
.
300
. 2.0
. 1.0
. 鈥?/div>
. . .
. 0.15
750
V
鈥?/div>
ms
鈥?kV/ms
200
V
see note 11
0.5
A
Cooling
. . . . . . . .
natural, forced-air or liquid
Where natural cooling is insufficient to maintain the envelope
temperatures below the specified rated values, cooling by
forced-air, or by oil or coolant immersion may be used.
The temperature of the anode terminal and the base, measured
at the points indicated on the outline drawing, must not exceed
the values specified below.
Anode terminal . . . . . . . . . . 250
8C
max
Base . . . . . . . . . . . . . 220
8C
max
Cathode
Heater voltage . . . . . . . . . 6.3
+
7
1
/
2
%
Heating time . . . . . . . . . . 3.0
鈥?/div>
V
min
Reservoir
Heater voltage (see note 1) . . . . . 6.3
+
7
1
/
2
%
Heating time . . . . . . . . . . 3.0
鈥?/div>
V
min
Environmental (See note 12)
Ambient temperature . . . . .
755
Altitude . . . . . . . . . . . 鈥?/div>
鈥?/div>
+130
3
10 000
8C
km
ft
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: Redwood 2002 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-CX1157 Issue 3, September 2002
527/5626
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