 | | Re: sonar (fwd) —MAR ERICSON
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| | | Forwarded message: (28 years ago, 18-Nov-96, to lugnet.robotics.handyboard)
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| | | | | Re: sonar (fwd) —Richard Vannoy
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| | | | Just to add a basic newbie note on receiver blanking that will have to be designed in if you build it yourself. A transmit pulse is a very powerful (relatively speaking) pulse. For example, the Polaroid transducer, about the size of a silver dollar, (...) (28 years ago, 18-Nov-96, to lugnet.robotics.handyboard)
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| | | | | | Re: sonar (fwd) —John Whitten
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| | | | (...) This is true of the POLAROID Ultrasonic Sensor module, but not necessarily true of all Ultrasonic Sensor modules. It depends on the type of Ultrasonic Transducer the circuit uses. The one I built uses a Piezo-Electric transducer available (...) (28 years ago, 23-Nov-96, to lugnet.robotics.handyboard)
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| | | | | | Re: sonar (fwd) —Richard Vannoy
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| | | | (...) My 20 years of navy sonar help me somewhat with active/passive transducers and things in the kilowatt range... :-) but I'm a rank newbie to most of the sonar talked about here. Sounds like Piezo would be very cheap. True? I bought two (...) (28 years ago, 23-Nov-96, to lugnet.robotics.handyboard)
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