Basically working on a high power version of the ultrasonic distance tester commonly found online. I find emitters/receivers a little harder to find and I possible don't fully understand them right now as the demo circuit is hard to understand.
When an emmiter is rated for X frequency, do I need to provide a sine wave at that frequency to the emmiter? Or do you simply power them and they oscillate? Is this just a speaker and the frequency given is the same as any speaker which is the peak frequency response?
I am looking to use this to determine the length of a tube. I am hoping not to get false or inaccurate readings and trying to figure out the power requirements for say 100-200ft or so.
When an emmiter is rated for X frequency, do I need to provide a sine wave at that frequency to the emmiter? Or do you simply power them and they oscillate? Is this just a speaker and the frequency given is the same as any speaker which is the peak frequency response?
I am looking to use this to determine the length of a tube. I am hoping not to get false or inaccurate readings and trying to figure out the power requirements for say 100-200ft or so.