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ultrasonic driver circuit

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mayur.kulkarni

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we r implementing an ultrasonic ranger as a project. we hv designed pulse generator. but v r unable to get amplification using following circuit.please help



69_1199297735.jpg



it uses inverters. but v r not at all getting amplification.instead v r getting attenuated output square wave. plz help

Added after 5 minutes:

we implemented this circuit using 74LS04 as well as HEF4049 hex inverters. but output is same. we want to amplify 11.5 V peak to peak square wave from astable multivibrator IC555
 

ultrasonic driver

With the given information, it is difficult to be sure. It looks like the transducer is a piezoelectic device and therefore capacitive. Perhaps this is the problem. Increase the value of C, or remove it all together ( there is no DC path through a piezo transducer)

Humber
 

ultrasonic ranger driver

you can not amplify the signal. Only You can drive the piezo bidirectionally.
 
piezo driver circuit ultrasone

You are correct Hunter, but I think mean to get an output that is twice that of a single driver by using differential drive.

Humber
 
ultrasonic driver differential

Hi Humber,
Supply CMOS IC with max VCC. This will be enough, I think.
Regards.
 

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