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參數(shù)資料
| 型號(hào)： | CX1157 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Hydrogen-Filled Ceramic Thyratron |
| 中文描述： | 氫閘流管填充陶瓷 |
| 文件頁(yè)數(shù)： | 2/5頁(yè) |
| 文件大?。?/td> | 73K |
| 代理商： | CX1157 |
CHARACTERISTICS
Min Typical Max
Critical DC anode voltage for
conduction (see note 10) .
Anode delay time
(see notes 10 and 13) .
Anode delay time drift
(see notes 10 and 14) .
Time jitter (see note 10) .
Recovery time .
Heater and reservoir current
(at 6.3 V) .
.
. –
0.2
0.3
kV
.
.
. –
0.15
0.25
m
s
.
.
.
.
.
.
. –
. –
.
20
50
ns
ns
1.0
5.0
.
.
.
.
see note 15 and curves
.
.
.
.
.
.
. 7.5
9.0
10.5
A
SINGLE-SHOT OR CROWBAR SERVICE
In applications requiring a very rapid rate of rise of anode
current, the CX1157 geometry allows it to be mounted in a
coaxial structure in order to minimise the total circuit
inductance. Operation of the tube under the following ratings
results in short anode delay times and very low time jitter.
MAXIMUM AND MINIMUM RATINGS
(Absolute values)
Min Typical Max
Anode
Peak forward anode voltage
(see note 16) .
Peak anode current
(see note 17) .
Average anode current
.
.
.
.
.
. –
–
20
kV
.
.
.
.
.
.
.
.
. –
. –
–
–
3000
300
A
mA
Grid 2
Unloaded grid 2 drive pulse
voltage .
.
Grid 2 pulse duration .
Rate of rise of grid 2 pulse
(unloaded)
Loaded grid 2 bias voltage .
Forward impedance of
grid 2 drive circuit .
.
.
.
.
.
.
.
.
.
. 0.5
. 0.25
1.0
–
2.0
5.0
kV
m
s
.
.
.
.
.
.
10
30
–
kV/
m
s
7
50
7
150
7
200
V
.
.
.
50
50
500
O
Grid 1
Grid 1 drive current (DC)
.
.
50
70
100
mA
Heaters
Cathode heater voltage .
Reservoir heater voltage .
.
.
.
.
. 5.8
. 5.8
6.8
6.8
7.0
7.0
V
V
CHARACTERISTICS
Anode delay time
(see note 18) .
Rate of rise of anode current
(see notes 18 and 19) .
Time jitter (see note 20) .
.
.
.
.
.
. –
30
75
ns
.
.
.
.
. –
. –
100
5
1.0
–
2.0
kA/
m
s
ns
NOTES
1. The reservoir heater supply must be obtained either from
the cathode heater supply or if a separate supply is used it
must be decoupled to avoid damage to the reservoir.
2. The tube must be mounted by means of its mounting
flange.
3. The maximum permissible peak forward voltage for
instantaneous starting is 16 kV and there must be no
overshoot.
4. The peak inverse voltage including spike must not exceed
5.0 kV for the first 25
m
s after the anode pulse.
5. For single-shot or burst mode applications this parameter
can exceed 100 kA/
m
s. The ultimate value which can be
attained depends to a large extent upon the external
circuit.
6. This rate of rise refers to that part of the leading edge of
the pulse between 25% and 75% of the pulse amplitude.
7. Measured with respect to cathode. When grid 1 is pulse
driven, the last 0.25
m
s of the top of the grid 1 pulse must
overlap the corresponding first 0.25
m
s of the top of the
delayed grid 2 pulse.
8. The tube may be operated with a loaded grid 2 bias voltage
of 0 to
7
50 V provided that care is taken to ensure that the
peak grid 1 drive current is sufficiently low to prevent triode
firing (tube control by the grid 1 pulse).
9. When DC priming is used on grid 1, a negative bias of 100
to 200 V must be applied to grid 2 to ensure anode voltage
hold-off. DC priming is especially suitable in crowbar
service.
10. Typical figures are obtained on test using conditions of
minimum grid drive. Improved performance can be
expected by increasing grid drive. Maximum life is obtained
with a grid 1 pre-pulse.
11. 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
7
10 and +5 V with respect to cathode
potential during the period between the completion of
recovery and the commencement of the succeeding grid
pulse.
12. To ensure a high standard of ruggedness, all tubes are
subjected to the following tests. After each mechanical test
all the tubes must then satisfy all electrical tests.
(a) Vibration – The tubes are vibrated at 50 Hz with
acceleration of 10 g for one minute in the direction of
the
cathode
axis
and
perpendicular to the cathode axis. See note 2.
(b) Recovery Time – The tubes are tested for recovery at
zero grid 2 bias voltage with a maximum limit of 35
m
s.
The tubes are subjected to the following tests on a
sampling basis.
(c) Operation under Vibration – The tubes are vibrated at
10 g in each of three planes at a sweep rate of one
octave per minute from 20 to 500 to 20 Hz, under
normal operating conditions. See note 2.
then
in
one
direction
CX1157, page 2
#
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