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How to make parametric speaker

Step 2Modulator unit

modulator unit

I use 74HC4052 analog switch as modulator.amplifier is BTL IC TA8258HQ.If you use under 20V DC power,you need step up transformer.ultrasonic transducer require over 20V.

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Author:offbike125

I ride KTM125 on holiday. I like mountain. I like soldering. I like radio.