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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MIC3202 датащи(PDF) 13 Page - Micrel Semiconductor |
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MIC3202 датащи(HTML) 13 Page - Micrel Semiconductor |
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13 / 19 page  Micrel, Inc. MIC3202 September 2010 13 M9999-091710-A Ripple Measurements To properly measure ripple on either input or output of a switching regulator, a proper ring in tip measurement is required. Standard oscilloscope probes come with a grounding clip, or a long wire with an alligator clip. Unfortunately, for high-frequency measurements, this ground clip can pick-up high-frequency noise and erroneously inject it into the measured output ripple. The standard evaluation board accommodates a home made version by providing probe points for both the input and output supplies and their respective grounds. This requires the removing of the oscilloscope probe sheath and ground clip from a standard oscilloscope probe and wrapping a non-shielded bus wire around the oscilloscope probe. If there does not happen to be any non-shielded bus wire immediately available, the leads from axial resistors will work. By maintaining the shortest possible ground lengths on the oscilloscope probe, true ripple measurements can be obtained. Figure 2. Low-Noise Measurement |
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