| 摘要 |
<p>998,165. Semi-conductor circuits. STANDARD TELEPHONES & CABLES Ltd. Sept. 29, 1961 [Oct. 14, 1960], No. 35315/60. Heading H3T. [Also in Division H1] An electrical signal translating circuit comprises a semi-conductor body having only capacitative or inductive connections thereto (i.e. no ohmic or rectifying connections) and containing one or more PN junctions and non- conducting regions so that closed current paths comprising PN junction(s) exist round the region(s). Figs. 1 and 2 show a self-powered tunnel diode oscillator solid circuit having the equivalent circuit shown in Fig. 3. A photovoltaic cell is provided by the junction between diffused P-type layer 2 and N-type body 1 which applies a voltage to the tunnel diode portion formed by P region 3 and N region 4. The circuit is established round hole 5 in the body to which an inductive or capacitative connection may be made; a ferrite slug may be provided in the hole to improve coupling and tuning. Fig. 5 shows an amplifier construction comprising a transistor formed by P-type regions 9 and 10 and N-type region 11 with the equivalent circuit shown in Fig. 6. The collector is biased by utilizing the photo-electric effect of PN junction 6a and the base by the photo-electric effect of the junction between regions 10 and 11, the circuit being established around a second hole 13. Other arrangements are described including a cascade transistor amplifier arrangement in which the emitter of one transistor is connected to the gate of the next via a zone of degenerate semiconductor, and a further embodiment comprising a tunnel triode. A series of solid circuit assemblies may be stacked with capacitative coupling therebetween and a source of radioactive material may be incorporated in the body to energize the photo-cell portion; alternatively, the circuit may be powered by coupling the circuit to an R.F. power supply and rectifying this within the circuit.</p> |
