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Hello I made a power supply 3 to 30 volts for my grand son it works withe battery and mobile charger

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<p>سلام جناب عباسپور رشته تخصصی شما چی هست من عاشق الکترونیکم ولی توی سایتهای داخلی چیزی پیدا نکردم ولی این سایت خیلی عالیه</p>

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Bio: I am abbas poryazdanpanah I live in iran I made 30 hand work with Losses I have 70 years old
More by abbasporyazdanpanah:Building a Digital Clock Laser Flashlight with 555  power supply with battery  
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