发明名称 Method and apparatus to conceal RF interference in AM radio reception caused by a switch mode power supply
摘要 A method and apparatus is disclosed in which a transformer which has at least one DC output and one input, and a precision timer which generates a control signal having a frequency within a predetermined range of an integer multiple of the carrier frequency spacing. A switch which is connected to the transformer controls the input of the transformer. A controller which is electrically connected to said DC output, said precision timer and the switch pulse width modulates said switch means at an integer multiple of the carrier frequency spacing whereby the DC output of the transformer is regulated.
申请公布号 US5519889(A) 申请公布日期 1996.05.21
申请号 US19940191909 申请日期 1994.02.04
申请人 FORD MOTOR COMPANY 发明人 HIPP, KENNETH M.
分类号 H02M3/28;H02M1/12;H02M3/335;H04B15/00;(IPC1-7):H04B1/16 主分类号 H02M3/28
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