first-order - LDN feb 06 page 1/3 First-order transients...

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LDN / feb. 06 page 1/3 First-order transients First-order circuits Thévenin/Norton equivalents Circuit equations Circuit of resistances and sources C R C v Vt KCL (single node): 0 = + dt dv C R Vt v RC Vt RC v dt dv = + Circuit of resistances and sources L L R i In KVL (right mesh): 0 ) ( = + In i R dt di L In L R i L R dt di = + (circuits shown after a sudden change at t = 0) Generic form: τ τ Xs x dt dx = + R L or RC = = τ τ (ref.: Hambley, Ch. 4)
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