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<title>Low-Pass Filter (RL)</title>
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This is a low-pass
filter implemented using a resistor and an inductor. The
inductor passes lower frequencies, causing the output voltage to
fluctuate more. Higher frequencies are blocked, and there is
reduced current across the resistor, keeping the
output voltage closer to ground.
<p>
Below the circuit is the frequency response in
<a href="http://en.wikipedia.org/wiki/Decibel">dB</a> for a range
of frequencies. You can click on the frequency response graph to see
the circuit in operation at that particular frequency.
<p>
Next: <a href="e-bandpass.html">Band-Pass Filter</a><p>
Previous: <a href="e-filt-hipass-l.html">High-Pass Filter (RL)</a><p>
<a href="/afilter/">Analog Filter Applet</a><p>
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