| 摘要 |
<p>In a thyristor which includes a protective circuit (for example parallel resistor and capacitor connected between gate and cathode to reject interference pulses, the protective circuit is integrated with the thyristor to save space and resist vibrations. As shown, the protective circuit is integrated on the active part of the thyristor and comprises a resistive metal layer 8 extending from the cathode 4 to the gate 7, and a capacitor formed by metal layers 8, 10 and intervening insulating layer 9. In other embodiments, the protective circuit is integrated with the thyristor by being provided on the inner wall of the thyristor housing or on a plate included in a pressure contact to the gate. <IMAGE></p> |
