A universal motor is a type of electric motor that can be used in both AC and DC power supplies. It has the ability to run on either alternating current (AC) or direct current (DC), making it an incredibly versatile piece of machinery. Universal motors are used in a wide range of applications, from small household appliances like vacuum cleaners and blenders, to more industrial uses such as drill presses and saws. They are also popular for use in battery-powered devices such as cordless drills due to their high efficiency when running on low voltage DC sources.

Universal motors operate by using two sets of windings; one set is connected directly across the power supply while the other is connected through a commutator which switches between positive and negative polarity depending on whether AC or DC power supply is being utilized at any given time. This allows them to maintain consistent speed regardless if they’re receiving AC or DC input voltage, allowing for smooth operation without interruption even when switching between different types of electricity sources mid-operation cycle if necessary. This makes them ideal for situations where multiple types electrical source may need be accessed during use since there’s no need switch out components every time this happens – saving time and money over traditional setups with separate dedicated machines each with a specific task requiring its own particular type of electricity source.

In short, universal motors provide great versatility thanks to their ability to run off of both AC/DC inputs without needing additional parts or modifications to make a transition from one to another. Their robust construction and efficient performance make them a perfect choice for many applications ranging from small consumer goods to larger industrial equipment alike, providing reliable functionality for whatever job you put it up against.