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  1. R

    DC voltage regulator

    hey i have built a 12V to 4.5V dc voltage converter for my Discman to be use in my car.i have used there a 5.1V regulatorof TO3 package.and it works fine but during working it is getting hot.so wat to be use as heat sink for that.
  2. R

    converting high range analog voltmeter

    hiiiii guyz i want use a analog voltmeter that is of 300V range as 15V voltmeter.so can i do this job by making its range near to 15V or nearby. :o
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