Method and apparatus to conceal rf interference in am radio...

Details Method and apparatus to conceal rf interference in am radio... Method and apparatus to conceal rf interference in am radio...

H - Electricity

04

B

H04B 15/02 (2006.01) H02M 1/12 (2006.01) H02M 1/14 (2006.01) H02M 3/335 (2006.01) H04B 15/00 (2006.01)

Patent

CA 2140066

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.

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