What is the primary voltage characteristic of a step-down transformer?

The primary voltage characteristic of a step-down transformer is that it has a higher voltage than the secondary voltage. This type of transformer is designed to reduce the voltage from the primary side to a lower voltage on the secondary side. The primary winding is connected to the higher voltage source, while the secondary winding outputs a lower voltage suitable for the intended application.

In a step-down transformer, the turns ratio (the number of coils on the primary versus the secondary) is greater on the primary side, which directly correlates with the higher voltage on that side compared to the secondary output. This function of transforming voltage levels is critical in electrical distribution systems, where high voltages are used for transmission to minimize energy loss over distances, and lower voltages are used for safety and usability in residential and commercial applications.

Understanding this principle is essential for anyone working in electronic security or related fields, as it applies to various systems involving power distribution and electronic device operation.