#664 220VAC 5V USB Power Adapter Teardown
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#665 0 - 30MHz AD9850 DDS Arduino Sine Generator (part 1)
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Finally a safe USB charger?
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Non-delicate teardown and schematic of 2A LED power supply.
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Keep Your Old Power Adapters!!!
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Don't throw away Old Batteries!Genius Invention with Welding Machine that you won't Believe😱
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When Public Art Goes Wrong
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Power For Your Electronics Projects - Voltage Regulators and Converters
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