25 kHz Ultrasound Transducer

Hello to everybody out there.

I am trying to create two circuits
* 1 transmitter
* 1 receiver
for ultrasounds. I all ready have a pair of 25 kHz transmitter/receiver.

I am completely new to electronics and I need help for a circuit to drive the transmitter and amplify the receiver. I found some over the internet but I don't know if the will do for me ?

http://elcodis.com/parts/2279326/250SR160.html#datasheet

Thanks in advance.

Athanasios

Hi Athanasios,

Attached is a schematic drawing for a transmitter and receiver. The document was drawn with "scheme-it":http://www.digikey.com/schemeit

Here are some good online resources for designing an ultrasonic transmitter and receiver circuit.

* This paper covers "Basic Ultrasonic Principles":http://www.olympus-ims.com/data/File/panametrics/UT-technotes.en.pdf
* Here is an application manual for "Murata Ultrasonic Sensors":http://www.murata.com/products/catalog/pdf/s15e.pdf

thank you very much Cody

Hi Cody I am trying to design the circuit you gave but I don't understand why we must have a transistor before the speaker...thank you

an also what kind of signal do we expect at the output of the 1st and 2nd op amp?

Hi

Also have a look these diagrams plus code There are two examples and code for you This should give you some ideas and how toos on what you want

See Uploads

Here is another link for you as well

http://www.harrington.force9.co.uk/Theory/PicMicro/srf1.pdf

And the asm file you will find here
http://www.harrington.force9.co.uk/Theory/PicMicro/srf1.asm

Or if you dont how to compile the assembler then here is the hex file ready to put into the chip You can interchange the 508 c for 12f629 series It will still work but remember to change the assembler file before you recompile accordingly

Shouldnt be too difficult for some of you

http://www.harrington.force9.co.uk/Theory/PicMicro/srf1.hex

Although personally i would try to understand this Makes life more interesting rather than just accepting thats what it does

ALL READY TO GO !! what more could you ask for The art of war !! Should watch it sometime excellent film "using your brains and not brawn you see far cleverer than you think