>-----Original Message----- >From: pic microcontroller discussion list >[mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Russell McMahon >Sent: 29 July 2004 13:22 >To: PICLIST@MITVMA.MIT.EDU >Subject: Re: [EE:] low pass filters >In practice R2 is usually added as shown to "impedance match". >If Rout is actually low then adding R2 makes the capacitor >'see' R2 rather than a near short circuit. The effect on >signal levels is as per my previous formula (id i didn't make >an error somewhere)(anyone checked?) Yes, see previous post (and quoted in Luis's reply). Mike ======================================================================= This e-mail is intended for the person it is addressed to only. The information contained in it may be confidential and/or protected by law. If you are not the intended recipient of this message, you must not make any use of this information, or copy or show it to any person. Please contact us immediately to tell us that you have received this e-mail, and return the original to us. Any use, forwarding, printing or copying of this message is strictly prohibited. No part of this message can be considered a request for goods or services. ======================================================================= -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu