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Examples
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For those of you who know how an a-to-d converter works, I offer this brief explanation: Inside the big fat chip, the voltage of the analog signal is sampled thousands of times per second and stored in sample-and-hold cells.
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I used an oscilloscope to observe the output of the sample-and-hold circuit to see why it was not holding the sampled voltage steady while the ADC was doing its job.
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The entire system worked from one sample-and-hold circuit.
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Absolutely perfect sample-and-hold action was the result, and all of my needed signals were as stable as a rock.
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The sample-and-hold circuits would sample an analog input and then convert the held analog voltage to a digital word with an ADC.
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The sample-and-hold circuits would sample an analog input and then convert the held analog voltage to a digital word with an ADC.
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I used an oscilloscope to observe the output of the sample-and-hold circuit to see why it was not holding the sampled voltage steady while the ADC was doing its job.
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The entire system worked from one sample-and-hold circuit.
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Absolutely perfect sample-and-hold action was the result, and all of my needed signals were as stable as a rock.
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When the PWM signal goes to logic zero, sample-and-hold capacitor C
unknown title 2009
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