Get it as soon as thu sep 3.
Ferrite cable clamp filter.
Before mounting the clamp filter noise was emitted at a broad frequency band from 100 to 600 mhz.
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Ferrite clamp on cores are available at mouser electronics.
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The measurement results are shown in figure 4.
This does not mean that ferrite rings are a poor choice.
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As in the case of the previous test after winding the exclusive cable twice around the clamp filter noise was relatively reduced by 5 to 10 db.
The ferrite core function resembles that of an inductor but the ferrite frequency response deviates from this functionality at high frequencies.
Initial test results of ferrite rings showed poor performance compared to clamps when a single wire was passed through a ring.
Ferrite beads are used as a passive low pass filter by converting rf energy to heat by design contrast this with inductors which by design minimize conversion of rf energy to heat offering a high impedance to rf.
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Unfortunately ferrite beads also called a ferrite choke ferrite clamp ferrite collar emi filter bead or even a ferrite ring filter can be a bit of a mystery.
Ferrite rings are a convenient way for a large cable to achieve multiple turns and high exposure to the ferrite material.
0730 clamp filter connected to the power cable.
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