13-09-1961 дата публикации
Номер: GB0000877071A
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... 877,071. Semi-conductor devices. CLEVITE CORPORATION. Sept. 1, 1959 [Sept. 4, 1958], No. 29783/59. Class 37. A semi-conductor device comprises a body 12, Fig. 3, of semi-conductive material having at least two PN junctions 18, 20; 26, 28, arranged in pairs on each of its major surfaces, terminal connections 36, 38 for one pair of junctions 14, 22, resistances 32, 34 or resistive impedance means such as diodes, preferably semi-conductive junction diodes, Fig. 4 (not shown), interconnecting the junctions on each major surface, and a base electrode 30 making non-rectifying contact with the body 12. The semi-conductor device is symmetrical, i.e. the opposing junctions have the same area and same shape. The operation however is non-symmetrical because the resistance 32, say, causes 16 to be less effective as an emitter than 14 while the whole of 22, 24 are effective as collectors. The junctions may be annular and disc-shaped respectively, as shown, or quadrangular and rectangular respectively ...
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