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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This note was uploaded on 02/02/2010 for the course ENGINEERIN 520.101 taught by Professor Tracdtran during the Winter '06 term at Johns Hopkins.

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

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