NDLI: A new vacuum controlled switch for high-power-pulse generation and crowbar service

Content Provider	IEEE Xplore Digital Library
Author	Gilmour Jr., A.S. Lockwood, D.L.
Copyright Year	1968
Description	Author affiliation: Cornell Aeronautical Laboratory, Inc., Buffalo, N. Y. (Gilmour, A.S., Jr.)
Abstract	A new switching device is described which is capable of operating at several kilovolts and hundreds of amperes at pulse repetition frequencies of at least several tens of pulses per second and at pulse widths continuously adjustable from a few microseconds to dc. The device, which is expected to have an ultimate voltage capability of at least several tens of kilvolts, employs a vacuum arc as an emission source and utilizes an axial magnetic field in a cylindrical geometry for current control. The voltage drop across the switch is a function of the cathode material and is typically from 10 to 20 volts. In the case of a zinc cathode the drop is approximately 15 volts. Preliminary studies of the turn-on anc turn-off times during pulsed operation have shown that these times can be made shorter than 2 microseconds with little difficulty. A qualitative description of the operation of the device is given which is based on published information and on imformation obtained at Cornell Aeronautical Laboratory during several years of studies of vacuum arcs.
Starting Page	118
Ending Page	120
File Size	152641
Page Count	3
File Format	PDF
DOI	10.1109/IEDM.1968.188044
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1968-10-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Switches Space vector pulse width modulation Vacuum arcs Cathodes Frequency Magnetic fields Geometry Current control Voltage Magnetic materials
Content Type	Text
Resource Type	Article

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