Power Electronics Lab: Electronics Record Player
I designed an electronic record player in the Power Electronics Laboratory class. I built a class D audio amplifier a buck converter, and a motor driver.
The way the record player works is it takes the vibrations from the needle, which I originally used a piezo disc for, then passes it through a Class D audio amplifier. There is a buck converter on the record player that I built, and its duty cycle can be controlled by a potentiometer, allowing me to control record speed. There is a second buck converter that pumps down 18V to 12V, which is what most of the chips run on. This is so I can run the entire thing off of two 9V batteries if I so desired.
I designed a PCB for my PWM circuitry since it's something I would have to do 3 times, so to save time I just milled and soldered components onto the board.
I learned a ton through this class about electronics, and it made me much more confident in my electronics skills. I plan on using the knowledge I've gained
on some personal projects in the future.
