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BACKGROUND We studied the worst-case radiated radiofrequency (RF) susceptibility of automated external defibrillators (AEDs) based on the electromagnetic compatibility (EMC) requirements of a current standard for cardiac defibrillators, IEC 60601-2-4. Square wave modulation was used to mimic cardiac physiological frequencies of 1-3 Hz. Deviations from the(More)
When two oscillators are coupled together there are parameter regions called 'Arnold tongues' where they mode lock and their motion is periodic with a common frequency. We perform several numerical experiments on a circle map, studying the width of the Arnold tongues as a function of the period q , winding number p / q , and nonlinearity parameter k , in(More)
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