Warning

Do not reapeat anything in this article, if you are not qualified. AC current can easily kill you! You have been warned.

A simple DC to AC Inverter

This article is coming soon (probably winter 2025), I just have to improve my design (my first design melted lol) which requires more time and money. Anyway my motivation for buidling: It is so wonderfully easy to go from Ac to DC. You just use a half or full bridge rectifier. In theory it's very simple and can be seen on almost every modern device that plugs into the wall (To be fair there's a engineering involved). However, going from DC to AC is another story. This article aims will show how I built a simple inverter for educational purposes using a MCU, 4 mosfets, and SPWM signal (see cover photo). My reason for doing so is to learn more about EE in general, but moreover as a first project to fully learn about motor drivers. Let me explain, modern motor drivers on electric vehicals are typically brushless "DC" motors since they offer the optimal torque-effciency compared to other options like brushed DC. Let's disect what excatly what a brushless "Dc" motor is. It's typically, a 3-phase DC-AC inverter with the electric motor's stator configured as a Y and natural magnets on the top. So it's really an AC motor not "DC", but we call it brushless "DC." Anyway, the swithcing device on these motor drivers is typically mosfets in an H-configuration though more advanced applications now use IGBT and a modified switching alogirhtm (zero loss switching alogrithms). This article will be about a simple H-bridge DC to AC inveter that I built, but will eventually switch to expirements with 3-phase AC. My end goal is not build a solid state 3 phase inverter but to better understand burshless/3 phase motor systems, so i can utilize the skill to design electronics for EVs such as drones and eskates. Anyway, coming soon because Digikey orders add up quick for something I could get for 20$ on marketplace.