L6-RC-2009 - 1 RC Circuits RC Circuits Trac D. Tran ECE...

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Unformatted text preview: 1 RC Circuits RC Circuits Trac D. Tran ECE Department The Johns Hopkins University Baltimore, MD 21218 Outline Outline Introduction Circuits with sources, resistances & capacitances Their responses to time-varying currents/voltages & transients RC circuits DC steady state response Capacitance discharge through a resistance Capacitance charge through a resistance Response from general time-varying sources Water model 2 Introduction Introduction RC circuits Circuits with sources, resistances & capacitances Responses of RC circuits for both DC and AC sources Charging Discharging Many practical applications: analog filters, AC to DC adaptors, timing devices ) ( t v C ) ( t i + _ R + _ ) ( t v C DC Steady State Response DC Steady State Response S V C ) ( t i C + _ R + _ ) ( t v C ) ( ) ( t v dt d C t i C C = ) ( constant ) ( = = t i t v C C S C V t v = ) ( For steady-state conditions with DC sources, a capacitor behaves like an open circuit For non-zero voltage sources & after a long period of time, the capacitor is fully charged 3 Capacitance Discharge Capacitance Discharge...
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L6-RC-2009 - 1 RC Circuits RC Circuits Trac D. Tran ECE...

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