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9 Led vu meter with transistor-by ME

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Description: Home made by Me.I am not an engineer but i used to learn a basic electron at hight school. this is a big thing i have done 9 Led vu meter with transistor BC557 and BC547. i spend lower than 5$ for its components.visit my blog for the schema http://5khmer.wordpress.com/2011/03/21/led-vu-meter/ទិញគ្រឿងនៅផ្សាអូឬស្សី អស់លុយប្រហែល 5$

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9 Led vu meter with

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