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Gas-filled, spark-gap switch used in line pulse modulators.



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 By the mid–1970’s, the term “trigatron” was practically superseded in the USSR by the broader term “controlled discharger” (upravliaemyi razriadnik).

References in periodicals archive ?
As a result of a sharp decrease in the electrical strength of its main insulating gap between the cathode and the anode of the trigatron, an electric breakdown of the working dielectric medium takes place and, accordingly, a discharge of the previously charged CES to the load.
General view of the powerful trigatron type CV100 [11]
Dischargers of cascades are of trigatron type with air filling at atmospheric pressure.