| 摘要 |
1,101,569. Semi-conductor switches. DANFOSS A.S. 17 Nov., 1965 [18 Nov., 1964], No. 48799/65. Heading H1K. A switching element consists of a semi conductor material such as a tellurium-arsenic germanium alloy provided with two areacontact electrodes at least the surfaces of which in contact with the semi-conductor are of the same order of thermal conductivity as the semi-conductor, preferably smaller. With a wafer-form semi-conductor the electrodes may completely cover the major faces and preferably extend beyond them. Suitable materials for the electrodes (or their inner parts) include nickel, nickel-iron alloys, and amorphous carbon. The devices are of the voltage switched type, the threshold voltage depending though on ambient temperature, and on pressure applied to the element. It is stated that the current in the low resistance state of the device is carried substantially along the inter electrode axis. |
