If you are not aware, AC and DC are known to be generators. They can be used by different companies but they have some differences that you should be aware of. The DC generator would need to use a rectifier so that it can direct the right mechanism towards the item that it is providing power to.
AC is being powered by the electromagnet. Without the electromagnet, this type of generator will not work. Aside from the differences in the mechanism, there is also a difference between the flow of their electrons. They will move towards different directions depending on how they are used.