The Dog Barks When the Phone Rings: An Engineer's Guide to Solving Problems by Bob Schmidt

Author:Bob Schmidt [Schmidt, Bob]
Language: eng
Format: mobi, epub
Publisher: Kokomo Press LLC
Published: 2013-08-22T00:00:00+00:00

What is happening to the circuit? In many cases, what you will discover is that the circuit design is exquisitely sensitive to the amount of capacitance at that node. The oscilloscope probe adds some small amount of capacitance (typically between 1 and 10 picofarads—yes, that is 10-12 farads), and that tiny capacitor is enough to shift the circuit from non-working to working.

Inevitably, some casual observers will quickly say, “Okay, so you just need to add a little capacitor to your circuit and then it will always work like it does with the oscilloscope connected.”

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