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EMC at Component and PCB Level by Martin O 'Hara

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CHAPTER 2

PASSIVE COMPONENTS

The selection of passive component elements in a circuit is often overlooked as these components are usually chosen to bias or complement their more exciting active component counterparts. The passive component does have a significant effect on the overall electromagnetic compatibility (EMC) of a circuit, as these components cannot only be the cause of circuit problems in themselves, but can also upset the stability of the active circuit they are connected to.

Passive component electromagnetic interference (EMI) problems could result in the expensive mistake of replacing a perfectly good active device, such as an op-amp, because a bias resistor is acting inductively at a certain frequency for example. The change ...

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