Discharge circuits and loads Page: 27 of 62
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DISCHARGE CIRCUITS AND LOADS
Initially the thyratron is at +50 kV and the bias on the spark gap at
-50 kV. A 50-pF shunt load is assumed across the end of that line. The 23-
and 50-Q cables were selected and were found to have little effect on rise-
time. The switch is a HY-5301, and gives an output pulse (Fig. 11) rate of
rise of 7.5 kV/ns, which is more than adequate for multichanneling most
spark gaps that require 6 kV/ns. An ordinary thyratron provides only 1.5
to 2 kV/ns. This is, then, a relatively compact switch device that can be
used to provide fast trigger systems.
B. Trigger Generator for Multichannel Spark Gaps
Another tube examined was a developmental 100-kV device (HY-5323),
with a 15-ns resistive phase falltime and 30-nH total inductance. The
advantage of going to the higher voltage is the steeper slope (Fig. 12).
For multichanneling, the calculated 11 kV/ns is more than adequate. This
pulse can be generated at repetition rates of several kilohertz with low
delay times and extremely low jittcr.
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Sarjeant, W.J. Discharge circuits and loads, report, October 15, 1980; New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc1061299/m1/27/: accessed April 18, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.