Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!seismo!rutgers!sri-spam!ames!sdcsvax!sdcc6!sdcc7!muller From: muller@sdcc7.ucsd.EDU (Keith Muller) Newsgroups: sci.electronics Subject: Re: Choosing Cap Size in Power Supply Message-ID: <935@sdcc7.ucsd.EDU> Date: Mon, 27-Jul-87 13:11:57 EDT Article-I.D.: sdcc7.935 Posted: Mon Jul 27 13:11:57 1987 Date-Received: Tue, 28-Jul-87 05:35:54 EDT References: <5705@ut-ngp.UUCP> <1884@kitty.UUCP> Organization: University of California, San Diego Lines: 8 Summary: response time Except for "brute force" power supplies, depending on the capactors to perform filtering only works on steady state conditions, which except for test bench measurements quite often do not exsist in a real application. The large capacitors are placed on the raw DC supply before the regulator circuit. Smaller ones are place on the other side. Although the capacitors do lower ripple, they have terrible response to dynamic load swings (which is the job of the active regulator).