From the course: Electronics Foundations: Basic Circuits
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RC high pass filter
From the course: Electronics Foundations: Basic Circuits
RC high pass filter
- A high-pass filter is a circuit that attenuates or reduces any low-frequency components of a signal, while allowing the high-frequency components of that signal to pass through. A high-pass RC filter can be built using the same components as a low-pass RC filter. The difference between the two types of filters is that the locations of the resistor and capacitor are swapped. In a high-pass RC filter, the capacitor is in series with the output, and the resistor is in parallel with the output. In this configuration, I like to think of the output node as an exclusive dance club. And the capacitor is a bouncer that decides which frequencies get to come into the club. So when high-frequency signals come up to the bouncer, he lowers his impedance, and he lets them right on in. But when low-frequency signals try to get into the club, that bouncer's going to raise his impedance and block them. Now, inside the club, the…
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Impedance8m 18s
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Filter frequency response7m
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Logarithmic scale5m 20s
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Decibels9m 2s
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RC low pass filter8m 14s
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Decoupling capacitors4m 34s
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RC high pass filter4m 48s
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Impedance matching and bridging5m 38s
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Challenge: Filter audio1m 24s
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Solution: Filter audio4m 12s
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