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Simple and powerful audio amplifier circuit

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Weld the wires without to need soldering wire!

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Convert soldering iron 220v AC to 12v DC

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Repair all LED bulbs using a battery !

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beautiful circuit with relay - You will need it !

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How to make super micro water pump. #shorts

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Electronic component VS overvoltage part 1

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simple and beautiful circuit with 2 relay

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beautiful circuit using a motion sensor.

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how to make amplifier - Simple and powerful audio amplifier circuit - mr industry

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how to make air conditioner | portable air conditioner

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Electronic components VS overvoltage

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If you have a medicine strip, do this - 3 ways to repair led bulbs