One Shot Circuit with Delay
One Shot Circuit with Delay
(OP)
Hello,
I have a project at work and would like some help by some more experienced people. The Circuit im working on is named computer data good line. The line is normally high(12V) and a group of negative pulses are put on this line with an interval of about 300 micro seconds. These pulse sometimes come out in groups of 3, and other times groups of 4. The pulses themselves are approximately 30 micro seconds width and separated by about 10 micro seconds.
I need to control the number of pulses by only having 1 pulse outputed on each group of pulses. The next group of pulses could be ignored also.
My question is : Would a one shot (monostable multivibrator) circuit be the best way to get only 1 pulse on the output. Im guessing i would need some sort of delay on the output as well to prevent the other pulses in the group from outputing. How would i implement this? using 555 timer maybe? would it be simpler just to use some flip flops? Thanks for any info.
I have a project at work and would like some help by some more experienced people. The Circuit im working on is named computer data good line. The line is normally high(12V) and a group of negative pulses are put on this line with an interval of about 300 micro seconds. These pulse sometimes come out in groups of 3, and other times groups of 4. The pulses themselves are approximately 30 micro seconds width and separated by about 10 micro seconds.
I need to control the number of pulses by only having 1 pulse outputed on each group of pulses. The next group of pulses could be ignored also.
My question is : Would a one shot (monostable multivibrator) circuit be the best way to get only 1 pulse on the output. Im guessing i would need some sort of delay on the output as well to prevent the other pulses in the group from outputing. How would i implement this? using 555 timer maybe? would it be simpler just to use some flip flops? Thanks for any info.





RE: One Shot Circuit with Delay
RE: One Shot Circuit with Delay
Is it the best solution? Depends on a lot of things. Quantity, specific other aspects of your situation. Since I don't know ALL the details I often suggest using something like a PIC processor.
In this case it could be a 6pin processor. Then you could handle any and all situations and generate a precise output depending on a small bit'O code.
RE: One Shot Circuit with Delay
RE: One Shot Circuit with Delay
I dont know if a missing pulse detector circuit would work because it would not be outputting the first pulse in the group.
I have a PIC programmer but have not written any programs for it. Is there a database on the internet of shareware PIC programs that engineers can use? Thanks.
RE: One Shot Circuit with Delay
AND
http://www.piclist.com/techref/piclist/index.htm
There was one site that had massive info including downloadable code. I can not recall the name as I have switched to Atmel. Good luck.