Switch-Mode Power Supply (SMPS) Emissions Filtering: Attenuation vs. Leakage Trade-Off

This relationship is important to understand when developing the end system.

Advanced EMI Filters Improve Brush DC Motors

Billions of brush DC motors are manufactured annually worldwide, a figure that is expected to increase over the next 10 years.

How to Protect Patients from Potential Electrical Failure

People and power don’t mix well, and this is particularly true when people are medical patients. Aside from the more usual environment of a medical facility, patients are also...

Medical Power Supplies and Electromagnetic Interference

One of the challenges of using commercial power supplies in medical instruments is electromagnetic interference (EMI). Commercial power supplies often list “meets Class B” for EMI,...

Using Monolithic Filters to Address EMI in Medical Devices

Many factors are conspiring to increase the amount of “noise” or interference that can disturb the functionality and even damage electronic devices, starting with the sheer...

Power Architectures for Patient-Connected Medical Devices

Meeting the requirements for patient-connected medical devices can present challenges for power system designers. There are several key elements to consider, including isolation,...

EMC for Medical Devices: EN/IEC 60601-1-2, 4th Edition

The fourth edition IEC/EN 60601-1-2 (4^th Edition) will become a mandatory standard covering safety for medical devices on December 31, 2018.^1,2 As with any new...

EMC Requirements: Pending Changes for the Fourth Edition of IEC 60601-1-2

Electromagnetic compatibility (EMC) requirements for medical devices and systems is defined by IEC 60601-1-2. The fourth edition implementation of this EMC...

New Medical Device EMC Requirements

Implementation of IEC 60601-1-2, 4th edition is on the horizon. This collateral standard to the IEC 60601-1 medical safety standard specifies the electromagnetic compatibility (EMC) requirements for...

Selecting Power Supplies for Medical Equipment Designs

When it comes to medical equipment, nothing is more important than the safety of patients and health care personnel. From diagnostic tools such as ultrasound devices to home health...

Designing for Regulatory Approval: What is Important to Regulators in the Approval Process?

Giving attention to regulatory considerations at the earliest stages of product design and development can create a smoother and more successful...

Today’s Changing Healthcare Demands Have Big Impact on Power Supply Design Considerations

It is clear that the medical electronics industry has entered an era of dramatic transitions that touch virtually every aspect of the business from...

Safety in Medical Electrical Equipment Starts with the Power Connection

Electrical equipment used in medical technology must not place patients or medical staff in danger. This, in turn, requires that designing safe equipment starts at the...