Ahhh, the AVERAGE DC level of a sine wave is ZERO! * | __O Thomas C. Sefranek WA1RHP@ARRL.NET |_-\<,_ Amateur Radio Operator: WA1RHP (*)/ (*) Bicycle mobile on 145.41 MHz PL 74.4 ARRL Instructor, Technical Specialist, VE Contact. http://hamradio.cmcorp.com/inventory/Inventory.html http://www.harvardrepeater.org > -----Original Message----- > From: pic microcontroller discussion list > [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Tan Chun Chiek > Sent: Friday, November 21, 2003 8:10 AM > To: PICLIST@MITVMA.MIT.EDU > Subject: Re: [EE:] Sine wave to DC conversion > > > Sorry for the unclear question. > > Yes, I'm trying to get the average DC level, the RMS value of the > sine wave. > > > > ----- Original Message ----- > From: "Olin Lathrop" > To: > Sent: Friday, November 21, 2003 8:57 PM > Subject: Re: Sine wave to DC conversion > > > > Tan Chun Chiek wrote: > > > I have a 4Vp-p sine wave (1 to 20khz) offsetted at 3v from a > > > switched capacitor filter as a bandpass filter onboard a maze > > > navigating robot. It's for a few IR sensor pairs. > > > > > > How can i have this signal converted to a DC signal (0-4V) using > > > LM324 opamps powered by a single rail 6V (maybe more) supply? > > > > What exactly do you want this "conversion" to DC to do? Are > you trying to > > get the average DC level? The amplitude? Something else? > > > > > > ***************************************************************** > > Embed Inc, embedded system specialists in Littleton Massachusetts > > (978) 742-9014, http://www.embedinc.com > > > > -- > > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > > > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > > -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body