A series of medical-grade ac-dc switching power supplies is available for medical OEMs. The TMC60 open-frame PCB series comes in 12 standard models, featuring single, dual, or triple outputs. Output voltages range from 5 to 48 V dc. Input voltages fall within 90-264 V ac and 47-63 Hz. An optional cover and fan assembly can be added during manufacturing. The series offers a minimum MTBF (mean time between failures) of 400,000 hours at full load. In addition, the power supplies come with overvoltage protection for the main output and overcurrent protection for all outputs. Withstand voltage is 4000 V ac from input to output, 1500 V ac from input to ground, and 500 V ac from output to ground. TRUMPower, Santa Clara, CA, 408/988-6616.