Improvements in or relating to circuit arrangements suitable for amplifying mixing or modulating electric voltages

摘要

897,731. Semi-conductor negative resistance amplifier circuits. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 25, 1958 [June 26, 1957], No. 20398/58. Class 40(6). [Also in Group XXXVI] A negative resistance PN junction device 8 (Fig. 4) of the type described in Group XXXVI, biased by direct voltage V, to its negative resistance condition, is mounted as shown in waveguide 7 to amplify the passing wave.