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CX1157 Datasheet(PDF) 3 Page - List of Unclassifed Manufacturers |
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CX1157 Datasheet(HTML) 3 Page - List of Unclassifed Manufacturers |
3 / 5 page (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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