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kushal.khanal
Joined: 20 Aug 2007
Posts: 14
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 20 Aug 2007 11:52 clipped sine wave |
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I am having problem in counting the period/frequency of clipped sine wave;
can any one suggest pulse shaping circuitry so that i can measure frequency;
Specially I had problem in calculating frequency deviation in flow measurement using ultrasound;
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20 Aug 2007 11:52 Ads |
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IanP
Joined: 05 Oct 2004
Posts: 6490
Helped: 1542
Location: West Coast
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kushal.khanal
Joined: 20 Aug 2007
Posts: 14
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21 Aug 2007 19:58 clipped sine wave to sine |
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FIRST OF ALL,
THANKS A LOT FOR LENDING HELPING HANDS.
I THINK I COULD NOT MAKE YOU UNDERSTAND GUYS!!!
AS SHOWN IN ATTACHED FILE I HAVE CLIPPED SINE WAVE AND I HAVE TO CONVERT IT TO SQUARE WAVE FOR COUNTING ITS WAVE'S FREQUENCY.
ANY IDEA GUYS??????@?!
------
* *
* *
* * .
* * .
----*----------*-----------*---------
. * *
. * *
* *
*-----*
PK-PK (6- V
FIG:CILPPED SINE WAVE PULSE TO BE SHAPED TO SQUARE WAVE
. . 5V
* * * * * * *
* * *
* * *
* * *
-- *----------* * * * * * *-----------------------------0V
.
.
FIG: SQAURE WAVE TO BE OBTAINED
CAN YOU HELP WITH THIS IanP????????????
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IanP
Joined: 05 Oct 2004
Posts: 6490
Helped: 1542
Location: West Coast
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kushal.khanal
Joined: 20 Aug 2007
Posts: 14
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22 Aug 2007 8:45 clipped sine to square |
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No solutions at all
I can't get a complete square;
no improvement guys;
refer attachment:cry:
http://www.edaboard.com/viewtopic.php?p=893600#893600
Added after 12 minutes:
Yes,I have noted this circuit in the same website;
can i use any opamp instead of 1/2 TLC93
TLV2470;
So, I have not tried it yet....
the input wave is very fast(40khz) so I am afraid whether comparator can switch on same speed and on the other hand i am finding difficulty in obtaining square wave as i mentioned earlier
http://www.edaboard.com/viewtopic.php?p=893600#893600
Regards
kushal khanal
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