While DC power supplies for 12V are easy to build, they can be incredibly inefficient when driving a large load. The choice of the DC regulator determines the output load that can be handled by the power supply. Generally, you could classify a 12V power supply by its operation of linear or switch-mode.Ī linear 12V power supply is easy to build, as it involves a transformer, diode bridge circuit, a 12V DC regulator and bypass capacitors to minimize fluctuation of the voltage. Most systems convert the incoming AC into 12V DC before stepping down further into 5V, 3.3V or 1.8V.īuilding a 12V power supply may seem a straightforward task, but you could run into some unexpected issues if you overlooked some important points. If you’re working on commercial products like alarm systems, data acquisition or audio interfaces, you’ll often have a 12V supply connected to the primary control modules. It’s true that there are ready-made power supply modules, building one alongside the main circuit is often more economical and space-saving. While I don’t literally build a door on my workstation, I do occasionally need to design a dedicated 12V power supply on the PCB. One of my favorites that helps me to break an impasse sounds like this ‘if an opportunity doesn’t knock, build a door.’ I try to take this same positive approach in electronics design: often waiting for your boards to tell you what’s wrong with the design will result in a cost-inefficiency and a waste of prototyping runs. I’m a self-help junkie and digesting motivational quotes in the morning helps to kickstart my day with a bang. There are formidable challenges in building a good 12V power supply.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |