FX215 ETC2 | Alldatasheet
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\\ \\\\ \\- Oe Thyratron Type FX 215 SERRE} General. The FX 215 is a hydrogen-filled thyratron 0-375" -| Le , designed for pulse applications, where high peak DIA. Hh a emission and high peak forward and inverse anode Nope CONNECTION }_—iO593 voltages are required. Due to the absence of con- (I) ] densable vapour, it is not necessary to provide thermo- f {_) static control of the bulb temperature by the use of an air-blast, and, for the same reason, the valve may be operated over a wide range of ambient air tempera- tures without any appreciable change in the charac- teristics. The use of a hydrogen filling permits the leas" passage of high pulse currents at high arc-drop MAX. voltages without the risk of cathode disintegration. " “84 0/DIA.-: Mounting. The valve may be mounted in any position 2-04 0/ but should be clamped by the base only. It should on no account be operated in the vicinity of strong fields which could ionise the gas filling. — — HEATER & ai APPROXIMATE DATA CATHODE LEAD , , K)O. 3-81 DIA. 2-63 ve 25(45%)V TERNAL: x Tr 275 A 4 Tain cman) 200 A Bt ‘Vpcmin) (trigger) (c) 150 Vv om” ff Yom ==lS
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Termeny ™ GRID LEAD (WHITE) 6] HEATER LEAD (YELLOW) Va 60410 Vo O:BA TERMINAL SF” 0.BA TERMINAL Zarqmax) 500 Q Bf — Duty cycle (max) 0-001 Pre-heating time (min) 2 mins . Q 4" DIA Tamp —50+90 °C : [ vik we xfs umes xf 1 NOTES PR of Cc (2) () Repetition frequency, 500 pulses per second. NN) (2) Pulse length, 0:6, 1-4 or 2-0 us. S8 A @) Pulse shape, sensibly square. a (4) Preferred load impedance of 37:5 2. g —____— (5) Rate of rise of current, 600 A per ps. (©) In pulsed operation the peak inverse voltage exclusive of a pi ofa after the pulse? Mt wang WEIGHT I4'Ib. (0-567 kg.) (©) Grid pulse duration 2 us (min.). Rise time 0-5 ys (max.), MARCONI’S WIRELESS TELEGRAPH COMPANY LIMITED Head Office: Marconi House, Chelmsford, England. Telephone: Chelmsford 3221. Telegraphic Address: Expanse, Chelmsford
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