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	Science Forum Forum Index » Electronics » FM demodulator using PLL  FM demodulator using PLL « View previous topic :: View next topic »  Author Message quantumbrewer Posted: Tue May 29, 2007 12:44 am    Post subject: FM demodulator using PLL Forum Freshman Joined: 29 May 2007 Posts: 2 Location: Minnesota I am just unsure what values of capacitors and resistors to use with a 4046. The only other thing I know is the ratio detector. I had a gif of an FM detector using, I believe it was CMOS NAND gates with resistors and capacitors, tuned to 10.7 MHz. Back to top Steve Anderson Posted: Tue Jun 26, 2007 8:18 pm    Post subject: Re: FM demodulator using PLL Forum Freshman Joined: 26 Jun 2007 Posts: 4 quantumbrewer wrote: I am just unsure what values of capacitors and resistors to use with a 4046. To work this out we need a little more data, it is quite straightforward but many seem to drown in the maths when working out the loop filter values. What is the centre frequency? What is the deviation? What is the nature of the modulation? Steve A. Back to top Pumblechook Posted: Wed Dec 05, 2007 1:05 pm    Post subject: Forum Freshman Joined: 05 Dec 2007 Posts: 31 Years ago I built NBFM PLL detectors using open collector gates..TTL Most detectors are quadrature detectors these days and are usually contained within IC IF amplifiers.. Back to top Pumblechook Posted: Wed Dec 05, 2007 1:05 pm    Post subject: Forum Freshman Joined: 05 Dec 2007 Posts: 31 Years ago I built NBFM PLL detectors using open collector gates..TTL Most detectors are quadrature detectors these days and are usually contained within IC IF amplifiers.. Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First     Page 1 of 1 Science Forum Forum Index » Electronics » FM demodulator using PLL Jump to: Select a forum Natural Sciences----------------Astronomy & CosmologyBiologyChemistryEarth SciencesMathematicsPhysics People----------------Behavioral & Social SciencesHealth & MedicinePhilosophical DiscussionHistoryReligionPoliticsCriminology and Forensic Science General Technology----------------Computer ScienceElectronicsMilitary Technology Information Technology----------------Business & EconomicsEducationEngineering & Transportation International Issues----------------Environmental IssuesIn the News The Science Forum----------------General DiscussionIntroductionsScience-Fiction and Non-FictionExperimentationPseudoscienceLinksArt and Culture Site Administration----------------Site FeedbackTrash Can  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
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