| 摘要 |
793,805. Semi-conductor devices. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. July 4, 1955 [July 3, 1954], No. 19335/55. Class 37. A semi-conductor device in a casing is connected in series with one or more thermocouples disposed on the wall of the casing so that when current passes through the device heat is extracted from the casing by the cold junctions which are in good thermal contact with it, and discharged at the hot junctions. A junction rectifier consisting of a body 1 of N- type Ge to which a blob In 2 has been fused is soldered to the interior of a surface of copper enclosure 5 on which is mounted a number of series-connected thermocouples comprising copper bars 7 and blocks 6 of InSb. One set of junctions A lies adjacent the enclosure while the others B are exposed. The couples are insulated by mica sheet 10 and are separated by mica sheets 9. The terminal wires 3, 8 of the device are so disposed that current passing through the diode in the forward direction also passes through the couples whereby the junctions A are cooled by the Peltier effect and absorb the heat generated in the diode. In the Fig. 2 embodiment the thermocouples comprise Sb and Bi blocks 20, 24 respectively joined by copper bars 22, 23 with copper end connections 25, 27 while the diode is replaced by a transistor formed of N-type Ge body 10, mounted on a Ni annulus 13 provided with an external connector 14, with P-type emitter 12 and collector 11 regions soldered respectively to casing 16 and terminal wire 15. In this case the emitter current provides the cooling effect. |
