CX1157 データシートの表示（PDF） - Unspecified

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CX1157

Hydrogen-Filled Ceramic Thyratron

Unspecified 

(d) Survival under Vibration and Heater Cycling – The

tubes are vibrated at 10 g at a sweep rate of one

octave per minute from 5 to 500 Hz for 70 hours in

each plane together with heater cycling of a 10 minute

on/off cycle. See note 2.

(e) Long Duration Shock – The tubes are tested at

125 g for 10 ms with two blows in each plane. See

note 2.

(f) High Temperature Test – The tubes are tested at

a base temperature of 220 8C and an anode

temperature of 250 8C under normal operating

conditions for 5 hours. This implies an ambient

temperature of 130 8C.

(g) Low Temperature Instant Start – The tubes are cooled

to 720 8C and subjected to a 3-minute warm up

period with 5.8 V on the heater. The tubes must

withstand a snap start at 10 kV and operate

satisfactorily.

(h) Standby-Life – The tubes are run with 6.3 V heater

voltage applied for 500 hours.

13. The time interval between the instant when the unloaded

grid 2 voltage passes cathode potential and the instant

when anode conduction takes place.

14. The drift in delay time over a period from 10 seconds to

10 minutes after reaching full voltage.

15. The recovery characteristics are controlled on a sampling

basis.

16. For crowbar applications where the tube is required to hold

off DC anode voltage for longer than 20 ms, the maximum

peak forward anode voltage is 16 kV. If the reservoir

voltage is increased above normal, the DC hold-off voltage

may be reduced.

17. For pulse durations not exceeding 0.25 ms.

18. Shorter anode delay time and higher rate of rise of anode

current may be obtained by increasing the cathode and

reservoir heater voltages from 6.3 V to 6.8 V.

19. The rate of rise of anode current obtainable is also

dependent on the total circuit inductance and transmission

line type matching.

20. With the grid drive conditions specified, the anode delay

time jitter will normally be less than 1.0 ns.

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.

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.

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.

Users and equipment manufacturers must check the radiation

level under their maximum operating conditions.

#E2V Technologies

CX1157, page 3

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