lec7 - ENGR 111 Lecture 7 Reading: Chapters 20,21,30 Class...

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ENGR 111 Lecture 7 Reading: Chapters 20,21,30 Class notes
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Fall 2004 Capacitance z Two conducting plates, separated by an insulator z Can’t pass through current continuously, but current can pass for a short time { Current charges one plate, equal, opposite charge builds on the other plate, allowing current to pass z Q = CV, I = dQ/dt = C dV/dt
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Fall 2004 Capacitance – Water Analogy z As water enters one end – compresses the spring, exerting pressure on other end z Amount of water entering one side equals leaving on other side
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Fall 2004 RC Circuits z RC product determines the behavior z RC = time constant z Within RC time units, current is 1/e of initial current etc…
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Fall 2004 RC Circuits – Applications z Speed of response determined by RC constant z Use smaller RC, for rapid response z Larger RC, for slower response { To smooth out glitches in current/voltage { Converting AC into DC z Used in Amplifiers – separate frequencies to different speakers
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Fall 2004 Inductance z A coil of wire –current passing through creates
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This note was uploaded on 03/26/2008 for the course ENGR 111 taught by Professor Walker during the Fall '07 term at Texas A&M.

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lec7 - ENGR 111 Lecture 7 Reading: Chapters 20,21,30 Class...

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