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Re: EMI Filters in parallel, PFC question
Original poster: "Malcolm Watts" <m.j.watts-at-massey.ac.nz>
On 9 Jun 2004, at 6:39, Tesla list wrote:
> Original poster: David Speck <dave-at-davidspeckmd-dot-org>
> EMI Filters are low pass filter circuits.
> If you parallel them, you can double the current capacity of your
> supply, but you will halve the EMI protection (i. e., double the
> amplitude of EMI that will pass the assembly).
> If your series them you double the power dissipated within the filter,
> but you will halve the amount of EMI that would get through one
That depends on the characteristics of the filters doesn't it?
Passive filters generally require defined terminating impedances in
order to function to a particular requirement. Those impedances
affect the Q of the filter and its pass/stop characteristics at