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DPRG: Multiplexing sonars

Subject: DPRG: Multiplexing sonars
From: Dan Miner miner at centtech.com
Date: Fri Sep 17 11:27:08 CDT 1999

The sonars use about 400 volts (yes, four hundred!) .
I know of no easy way to do this.  Drilbert uses 2
sonar boards with 2 transducers.  I would suggest 
always using 1 board per transducer and then muxing
the sonars on the digital end (easy 5V).
                - Dan

- -----Original Message-----
>From: James, Bill [mailto:w-james2 at ti.com]
Sent: Friday, September 17, 1999 9:50 AM
To: 'Dallas Personal Robotics Group'
Subject: DPRG: Multiplexing sonars

I am thinking on how to add the sonars to Beerbot. Somebody had thought
of multiplexing the tranducers from the single control board. Ideas on
the best way to do that. I looked at some multiplexers/demultiplexors.
What voltage do the transducer operate at. The ones I looked at can
control a signal that is 20 volt peak to peak.

I had hear that these produce a fair amount of voltage. 

Relays would also work. 

Bill James 
w-james2 at ti.com 
Single Supply OpAmps 
Precision Analog             Texas Instruments 
work 972.480.2306          972.598.6201 pager 

Have Spacesuit will travel------Polymath in Training 


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