masterleous Posted March 13, 2005 Report Share Posted March 13, 2005 Hi all,I want to know the procedure to get a clock from a crystal oscillator. if we want to use 1 MHz to 30 MHz crystal with necessary circuit. than how will we get it?Secondly if i want some Clock Frequancies like 1 KHz to 200 KHz and i have a 1 MHz Crstal, than is their is any method to produce my require clock frequiency from that 1 MHz crystal ??????I want to use these clock for inputting to digital ICs.Thanks In ADVANCE Quote Link to comment Share on other sites More sharing options...
audioguru Posted March 13, 2005 Report Share Posted March 13, 2005 Hi Master,A crystal oscillator is very accurate and stable. Their simple circuit is all over the web and available from crystal manufacturers.A digital frequency divider circuit is used to reduce the frequency of a "master" crystal clock oscillator.The MM5369 was an IC that used a cheap but accurate 3.58MHz US colour TV crystal and produced an output of exactly 50Hz or 60Hz. I guess nobody makes their own clock anymore so they stopped making it. You can make your own with a CD4060 IC. It has a crystal oscillator circuit and a binary divider circuit. It can use a 1MHz crystal and produce binary divisions of 1MHz down to a little higher than 61Hz. Binary dividers divide by 2 and end-up with odd numbers but decade dividers are also available for dividing a frequency by ten's.You could also use a microcontroller IC which has its own crystal oscillator and program it to produce any accurate frequency you want. Quote Link to comment Share on other sites More sharing options...
masterleous Posted March 14, 2005 Author Report Share Posted March 14, 2005 Thanks audioguru,I will try CD4060 as you suggested. But audioguru using Microcontroller is not a cheapest way to get a clock.I am trying to make a square wave Oscillator, if i get success than i will put that logic in this forum toooo. Quote Link to comment Share on other sites More sharing options...
prateeksikka Posted March 17, 2005 Report Share Posted March 17, 2005 hi audioguru!what kind of program can do this job.anyhow ripple counters is an easy option can an 8085 or even my pentium desktop PC be used as a controller ?what would be the logic for such a program?prateek Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.