Hi,
I just built an ultrasonic device from a kit that I ordered online. The unit uses 4 piezo tweeters with a range of 5khz to 25khz and the power supply is a 12V/1.5A wall adapter.
My problem is that sound is not loud enough when I stand about 25 feet from the unit.
What modifications can I make to this design so that the sound output is increased.
Thanks
I just built an ultrasonic device from a kit that I ordered online. The unit uses 4 piezo tweeters with a range of 5khz to 25khz and the power supply is a 12V/1.5A wall adapter.
My problem is that sound is not loud enough when I stand about 25 feet from the unit.
What modifications can I make to this design so that the sound output is increased.
Thanks
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