What are the two main types of power supplies for circuits?

The two main types of power supplies for circuits are AC (Alternating Current) and DC (Direct Current). AC power is characterized by the flow of electric charge that periodically reverses direction, while DC power is characterized by a unidirectional flow of electric charge.

AC power is commonly used in residential and commercial power systems because it can be easily transformed to different voltages and is efficient for long-distance transmission. It is typically what you find in wall outlets. On the other hand, DC power is often used in electronic devices and applications such as batteries, solar panels, and DC motor control, where a constant voltage is required for operation.

Understanding the differences between AC and DC is crucial for working with electrical systems, as the choice of power supply type can significantly impact the design and functionality of electrical devices and circuits. This fundamental distinction between the two types of power supplies lays the groundwork for more advanced topics in electrical engineering and systems design.