![]() The best way to think of this would be to imagine a hose with water running through it. It provides the circuit with a certain voltage and current. A power supply is responsible for providing a circuit with all the power it will need during normal operation. We will start with a battery, and work our way up to a wall adapter. It’s pretty simple really first, I want to explain what a power supply does, and then I will show you how to build one. With all these different options, how does one power their electronics project? Let us show you! Some are battery powered, and others are solar. ![]() Some projects use the USB port on your computer others use a cheap wall adapter. The first part of any electronics project, is a power supply.
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