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11 Cards in this Set
- Front
- Back
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What is resistance?
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Resistance is measured by Ohm's Law R=V/i
R-resistance ohms V- potential difference, volts i- current amperes resistance is opposition to direct current flow |
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What is reactance?
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opposition to alternating current flow by capacitance or inductance
Reactance = potential (voltage)/I (AC current) |
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What is capacitance?
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ability to store charge
Capacitance = charge/potential |
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What is a capacitor?
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Capacitor is usually made up of 2 conductors with an insulator in between
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What is Inductance?
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ability due to magnetic effects to produce potential with current changes
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What is impednace?
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net oppsoition to current flow by both resistance and reactance, ratio of potential to current in an AC circuit
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What is a high pass filter?
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attenuates signals at low frequeny while leaving high frequency signals unchanged
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What is a low pass filter?
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attenuates signals at high frequency, leaves low frequency signals unchanges
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What is cut off filter frequency?
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frequency at which there is a 30% attenuation in signal amplitude
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What is filter phase shift?
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time delay caused by a filter (latency change) caused by a filter, especially affecting low-freq components of a signal
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What is filter time constant?
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resistance times cpacitance, inversely related to cutoff filter freq.
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