Dual power supply 3V,5V,6V,9V,12,15V with LM317,LM337

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mastersonic1515

Joined Oct 10, 2016
1
GUys im having trouble in my dual power supply project..

when i turn in on the transformer making buzzing sound. idk if is grounded or etc..

help and suggestion plz.
thank you..
 
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