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'[EE]: ultrasonic dog chaser'
I have a problem obtaining more than 130dB at 1m, with a PZT device
at high frequency ( same as used in ultrasonic dog chaser, 20...25Khz ).
Usual these PZT devices have 10 to 50 nF and maximum peak voltage less
than 70V. Do you know a good design for the acoustical resonator and/or
high eficiency PZT driver ?
http://www.piclist.com hint: To leave the PICList
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