How to start old power supplies from PC
A switch mode power supplies for free ! The old power supplies can be used for a lots of diy project. This is the best way for having a good power supplies already stabilised, with switch mode, for free. Difference behind switch mode power supplies & linear power supplies. Switch mode power supplies : A switching power supply is a power supply whose regulation is provided by an electrotechnical component used in switching (generally a transistor) and using a high-frequency transformer. Linear power supplies : A filtered rectified power supply is a power supply in which the electrotechnical component is used in linear mode (equipped with a diode bridge + a capacitor) and uses a conventional transformer. So switch mode power supplies is used for will give a very precise current, while the other no. So for precision electronics, that's what we need. If I want to power my arduino card in 5V, that and perfect. J'ai sur mon alimentation des sortie 3v 5v...