Retinal imaging is replacing traditional pupil dilation for eye examination. For the patient, there is no waiting for the eyes to dilate and no requirement to have a friend or family member drive them back from the appointment. Imaging allows the doctor to see 80% of the eye compared to just 15% for dilation.

When developing a new retinal scanner, engineers required a 400W 12V source. To avoid acoustic noise and airflow, a compact product with no fan was required. The power supply needed to have medical certification, a 5V standby voltage and inhibit capability. A cover was also requested.

A conversation with the local TDK-Lambda salesperson resulted in the medical CUS400M-12/AX5 power supply being sampled.

The CUS400M/A is just 142 x 90 x 39.5mm in size, has an integral baseplate for conduction cooling, a protective cover, and the ability to deliver 250W convection with 400W peak power for extended time periods. The X5 option provided the 5V standby, a remote on/off signal, and a DC Good signal.

TDK-Lambda offers a wide range of medical and scientific power supplies. Click here for more information.