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hi everyone. i'm from the philippines, I came across this thread while desperately looking for a solution to cure the alternator whine of my portable lcd tv (chinese made). i use a fm transmitter to hook-up the sound to my car's stock audio system. the lcd tv is producing the annoying alternator whine (thru the cigar lighter socket). i even tried connecting the tv direct to battery but the whine is still there.


moleculo's post solved the problem, only, since i'm a cheapskate and a quick link costs more than 10USD here, so I just used tie wire rolled like a rope as inductor core, and a 4700 uF 25V capacitor (can't find a 35V) and it worked like a charm. that's why I signed up just to say THANKS! :)


here are the materials i used:


5 meters of tie wire    .30$

4700 uF 25V cap       .60$

6m gauge 14 wire     3$

project box               .30$

electrical tape

super glue


total: less than 5$ :D