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From: noise@eneevax.UUCP (Johnson Noise)
Newsgroups: sci.electronics
Subject: Re: FAST pulses at several amps?
Message-ID: <839@eneevax.UUCP>
Date: Mon, 20-Apr-87 19:26:56 EST
Article-I.D.: eneevax.839
Posted: Mon Apr 20 19:26:56 1987
Date-Received: Tue, 21-Apr-87 03:24:28 EST
References: <2904@well.UUCP>
Reply-To: noise@eneevax.umd.edu.UUCP (Johnson Noise)
Distribution: na
Organization: Elec. Eng. Dept., U of Maryland, College Park, MD 20742
Lines: 14


For a fixed pulse duration, discharging a suitable length of
transmission line into the load is standard practice.  Hydrogen
thyratrons work well as fast, high current switches.  EG & G
manufactures their version (Krytrons) for this specific purpose.
Carefull construction and good impedence matching have yielded
sub-nanosecond risetimes.

Krytrons operate at relatively high voltages (2-5 kV), so an
attenuator may be required.  Krytrons exhibit finite lifetimes
(not more than 1E+7 discharges). Jitter not greater than 5ns
can be expected.

For more information, we refer you to EG & G.