| 摘要 |
<p>A thyristor having a collecting electrode which is formed on a specific base layer adjacent to a specific emitter layer of the thyristor in order to absorb an excessive current generated in the specific base layer. A plurality of pilot thyristors are arranged inside the collecting electrode. Each gate electrode of the pilot thyristors is connected to an emitter electrode of the thyristor of the immediately preceding stage. An emitter electrode of the final stage of the thyristors is used commonly with the collecting electrode. A turn-on current from the collecting electrode serves as a gate current of the main thyristor.</p> |
