What type of power supply is commonly used in medical devices?

Isolated power supply is commonly used in medical devices due to several critical reasons related to safety and functionality. This type of power supply helps to minimize the risk of electrical shocks to patients and healthcare professionals by providing a supply that is electrically isolated from the main power sources. This ensures that any leakage currents that might occur in the equipment do not pose a danger to patients, especially in sensitive environments like operating rooms or intensive care units.

Isolated power supplies also help in preventing interference from electromagnetic noise, which is vital for the accurate operation of medical devices that rely on precise measurements, such as diagnostic imaging equipment. Ensuring that the power supply is isolated helps to maintain the integrity of the signals and prevents malfunctioning that could compromise patient safety or diagnostic accuracy.

In contrast, other types of power supplies, such as direct or battery power supplies, may not offer the same level of safety and noise reduction. Switched power supplies, although commonly used in various applications for their efficiency, may also introduce electronic noise that can affect sensitive medical equipment. Thus, the use of isolated power supplies is a critical consideration in the design and application of medical devices to ensure patient safety and effective operation.