CONTEXT Health care applications of autoidentification technologies, such as radio frequency identification (RFID), have been proposed to improve patient safety and also the tracking and tracing of medical equipment. However, electromagnetic interference (EMI) by RFID on medical devices has never been reported. OBJECTIVE To assess and classify incidents of EMI by RFID on critical care equipme...

Schneider, Matthew J. M.S., Purdue University, May 2010. Design Considerations to Reduce Conducted and Radiated EMI. Major Professor: John P. Denton. This work evaluates the effects of conducted and radiated EMI due to improperly designed circuits or printed circuit board (PCB) layouts. Common circuits used in a wide range of electronic devices are evaluated using both good and poor design tech...

Increasing power density, faster switching and higher currents forces designers to spend more time both considering the effects of electromagnetic interference (EMI) and debugging a design that has EMI problems but is otherwise complete. This paper explains the different types of EMI and their coupling mechanisms and the existing EMI regulations. The most frequent noise sources, transmission pa...

Five chapters of this dissertation concentrate on the characterization and cancellation of high frequency parasitic parameters in EMI filters. One chapter addresses the interaction between the power interconnects and the parasitic parameters in EMI filters. The last chapter addresses the characterization, evaluation and design of noise separators. Both theoretical and experimental analyses are ...

Abstract—The main topic of this paper are the EMI reduction problems in high voltage power converters with 6.5 kV IGBTs. The generation process of electromagnetic interference is briefly analyzed, some EMI reduction methods are introduced. Theoretical analysis, calculation and experimental results of choosing the snubber circuit for minimization of parasitic ringing are described. The effect of...

Single-walled carbon nanotube (SWNT)-polymer composites have been fabricated to evaluate the electromagnetic interference (EMI) shielding effectiveness (SE) of SWNTs. Our results indicate that SWNTs can be used as effective lightweight EMI shielding materials. Composites with greater than 20 dB shielding efficiency were obtained easily. EMI SE was tested in the frequency range of 10 MHz to 1.5 ...

Abstract: Electromagnetic interference (EMI) has a negative effect upon the performance of circuit communication systems. The present study considers the case of EMI and it is shown that the harmonic noise increases with an increasing interference amplitude and frequency. When electromagnetic interference takes place with the input pins of 555 Timer using as an Monostable Multivibrator it can c...

OBJECTIVE To evaluate the current management of gout in general practitioners and specialists in Buenos Aires city. MATERIAL AND METHODS multiple choice, anonimous, survey, performed to 33 rheumatologists (REU), 52 Internal Medicine specialists (EMI) and 86 general practitioners (Otros). RESULTS Gout is a very common or usual disease for 51.5% of REU vs 11.5% EMI and 8.1% Otros. At diagnosi...

The effects of low intensity (flux capacity 0.06 mW/cm2) coherent electromagnetic irradiation (EMI) of 70.6 and 73 GHz frequencies and their combined effects with antibiotics--ceftriaxone or kanamycin (0.4 or 15 microM, correspondingly) on E. coli K12 growth and survival have been reported previously. To further study the effects of EMI and antibiotics and mechanisms, decrease in overall energy...