The very best power protection comes from a special type of transformer known as a Constant Voltage Transformer ( CVT). Providing unparalleled reliability and conditioning performance, spikes, and electrical noise are neutralized with attenuation as high as 75 dB. In addition, the input (or primary) and output (or secondary) transformer windings are physically separated. Known as Galvanic isolation this separation ensures that there is no direct connection between the mains supply and load.

While CVTs have several advantages, including simplicity and reliability, there are also some limitations. They may not respond as quickly to rapid and severe voltage fluctuations compared to electronic voltage stabilizers like servo stabilizers. Additionally, CVTs may have lower efficiency compared to some electronic alternatives. Constant Voltage Transformers are often used in applications where a stable and isolated power supply is essential, such as in critical electronic equipment, medical devices, and communication systems. They are particularly valued for their ability to provide a consistent output voltage without relying on complex electronic components.