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3 Simple Inventions with Electronics

In the first task you will learn exactly how to make a motor rate controller circuit. In the 2nd one you will certainly learn exactly how to make a broadband air blower using old vacuum cleaner electric motor. In the third one you will find out exactly how to make continuous 12v supply making use of old 20v laptop battery charger these are mosting likely to be 3 Simple Inventions with Electronics.

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