公开(公告)号：DE1589963A1

公开(公告)日：1970-05-06

申请号：DE1589963

申请日：1967-08-22

Applicant: IBM

Inventor： FU FANG FRANK ,  EUGENE HOWARD JUN WEBSTER

IPC: H02M7/21 ,  H01L29/00 ,  H02M7/12 ,  H02M7/155 ,  H02M7/217 ,  H03D1/18 ,  H02M7/44

Abstract: 1,127,579. Rectifying. INTERNATIONAL BUSINESS MACHINES CORP. 5 Sept., 1967 [15 Sept., 1966], No. 40624/67. Heading H2F. A rectifying circuit comprises a field-effect transistor with A.C. applied to the source or drain and an A.C. biasing signal on the gate in phase with the current applied to the source or drain. The circuit may be half-wave (Fig. 1, not shown), full-wave (Fig. 3) or a bridge (Fig. 4, not shown). The transistor may be of the NPN or PNP type and preferably operates in the enhancement mode. As seen in Fig. 3 the gate is supplied with a higher voltage than the source, and this voltage is adjustable by resistors R1, R2 to control the power in the load R. Electronic control may be used by replacing R2 by extra field-effect transistors. For high powers the transistors T2, T3 are of the insulated-gate type but for low powers junction types may be used. The biasing signal on the gate may be of square waveform.