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Monday Quiz: Noise and shielding

07 Dec 2015  | Martin Rowe

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2. Capacitive coupling provides a path for the injection of which unwanted phenomena?

a. Current

b. Stray capacitance

c. Stray inductance

d. radiated emissions

e. Electrical charge

f. a and e only

g. All of the above

h. None of the above

Question 2

3. The circuit below shows how capacitive coupling can result in current that interferes with the susceptible circuit. According to the paper, what can you do to minimise the interference?

a. Remove the capacitor

b. Replace the two wires between the capacitor and the susceptible circuit with a shielded cable where the shield is grounded at one end only.

c. Cut the wires between the noise source and the susceptible circuit.

d. Replace the two wires between the capacitor and the susceptible circuit with a shielded cable where the shield is grounded at both ends.

e. There is no way to mitigate capacitive coupling.

Question 3


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