| ??? 03/03/12 13:12 Read: times |
#186380 - You really, really need to get an oscilloscope! Responding to: ???'s previous message |
Raju M said:
I have no oscilloscope to check the response of TX & RX. You really, really need to get an oscilloscope!! Trying to do electronics without an oscilloscope is like trying to do carpentry without a saw! when powered up, beep sound was coming from transmitter (so i am thinking that TX is working) You should not be able to hear 40kHz as a "beep"!! "ultrasonic" means beyond the range of hearing - so, if you can hear it, there's something wrong! In the receiver section i am using audio amplifier Again, "ultrasonic" means beyond the range of audio - are you sure this "audio" amplifier is correctly designed for 40kHz? How can i check the response of the receiver circuit using multimeter. You can't! Multimeters are useless for any sort of rapidly-varying signal. Raju M said:
Did you mean to link to these pages: http://www.ecelab.com/circuit-ultrasonic-r.htm http://ecelab.com/circuit-ultrasonic-t.htm Note that they are pages, not images - so you cannot link them as images! To link as images, you need to go to the page, and find the URL of the image itself; eg, in MS-IE, by right-clicking the image and choosing 'Properties' And always use the 'Preview' to confirm that your post is correct before you post it! 
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| Topic | Author | Date |
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