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Gas-filled, spark-gap switch used in line pulse modulators.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a cold-electrode spark-gap switch in which the discharge between the two main electrodes is initiated by a trigger voltage pulse applied to the third (trigger) electrode. A triga-tron may have an open design, with the discharge occurring in air, or may be hermetically sealed, with the electrodes being enclosed in a gas-filled glass or ceramic envelope at a pressure of 10–103 kilonewtons/m2. The trigger electrode is located either between the main electrodes or in the hollow core of one of the main electrodes. By the mid–1970’s, the term “trigatron” was practically superseded in the USSR by the broader term “controlled discharger” (upravliaemyi razriadnik).

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The Marx generator operates with the triggering system based on a trigatron spark gap controlled by the ignition and commanded system.
Dischargers of cascades are of trigatron type with air filling at atmospheric pressure.