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underwater sonar system or fish finder design example needed

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totue

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I need underwater sonar system or fish finder design example.

thanks

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Please don't reply unless you have useful information to add on this post.Thanks
Any other replies are always welcome via PM.
 

singhjaya

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You can use a flat panckake spiral coil with a thin copper diaphram. Discharge a capacitor (0.1J to 100KJ) capacitor and you will have a nice short half sinusoidal pulse. Use a gated receiver looking for a single pulse return. You can get very good detail. I once made one about 10cm in dia with about 1000J capacitor, it would kill a gold fish with one pulse.
 

totue

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Thanks but i need a reference design that use a piezzo element.

totue
 

marjija

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I need some design examples for a sonar system using piezoelectric materials

Someone can help me?
 

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