<P> where δ (t) is the Dirac delta function </P> <P> These are frequency domain expressions . Analysis of them will show which frequencies the circuits (or filters) pass and reject . This analysis rests on a consideration of what happens to these gains as the frequency becomes very large and very small . </P> <P> As ω → ∞: </P> <Dl> <Dd> G C → 0 and G R → 1 . (\ displaystyle G_ (C) \ to 0 \ quad (\ mbox (and)) \ quad G_ (R) \ to 1 \, .) </Dd> </Dl>

Derive the equation for the output voltage of a rc low pass filter