LC Common Mode Power FilterDesigned by ivc in Norway
Overview This is a compact and effective LC filter designed to clean a noisy DC power supply. Perfect for sensitive components where stability is critical. The filter has properties to reduce the ...Read More…
This is a compact and effective LC filter designed to clean a noisy DC power supply. Perfect for sensitive components where stability is critical. The filter has properties to reduce the effects of interference radiated through the air and noise conducted via the power wires. One advantage of this filter is that both the negative and positive leads are filtered (common mode).
Suitable for setups up to 16V and maximum 1.5A (1500mA) load. The 3-pin input allows for a single bypass-signal. Problems often occur on sensitive systems when long power leads (15cm+) are used, limited space for wiring, improperly filtered power supplies, noise from drives or switch mode DC-DC voltage converter, or most commonly when a shared battery is used to minimize weight. The interference can result in video lines, banding, random drop-outs, and reduced transmission range. A low-pass LC-filter will help attenuation most of the high frequency power supply noise and interference.
A common-mode choke coil is used to provide large impedance (resistance) against common-mode current noise picked up by both power leads. It is more effective for noise suppression than conventional ferrite ring and differential-mode inductor setups. This means that noise coming in on both wires will canceled each other out leaving only the regular differential-mode current flowing through the choke.
The large series inductor will give good current noise suppression between the input and output. Low resistance of the coils cause only minimum voltage drop over the filter (<200mV) and the low-ESR capacitor used will ensure efficient ripple voltage (noise) reduction (<120mVpk-pk).
Only known brand and quality parts are used to offer the great filtering properties. Every filter is tested before being shipped out.
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