00390nam a2200133Ia 4500001000500000005001700005008004100022020001500063082001900078100003100097245006000128260001600188650005200204116820261006003518.0120911s9999    xx            000 0 und d  a0070308543  a621.381532 HUE  aHuelsman, L.P./ Allen, P.E  aIntroduction to the theory and design of active filters  aMcgraw Hill  aSequential machine theory   2. Switching theory