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3 Responses to 6 volt – 9 volt Variable DC Voltage?
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Not sure what you want to power but I’d check Ebay before I would build one. You can get a power supply low amperage for $2 or $3. All you need do is put a cord on them. They work great for lighting.
Most people have lots of power packs lying about that belong to kit they no longer use. These tend to range from 5V to 24V and can give either AC or DC output. If you don’t have something suitable yourself, you must have friends or family who do. When you have one, you’ll probably need to cut off the output plug (that used to fit into the ‘phone, laptop, electric screwdriver or whatever) and attach appropriate plug(s) as required. If you do cut off a plug, leave it with about 6″ of lead, as you never know when you may need just such a thing
Been doing this for years. Get the power supplies or wall worts from Goodwill and they are usually less than 3 dollars and if you plan it right go on a day when they are half price. I have one for the street lights and another that supplies power for the LEDs in the structures.