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Simple bench power supply with an old laptop charger




So this is my bench power supply, it's a very simple building with only four wires to add / connect. The main power comes from an old portable charger that can deliver 19v and 3.4A max. It is worth mentioning that the portable charger is a 2-wire version from an Acer laptop. Many laptops today use a …
By: MattW213

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