Subject:
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Re: (Polaroid quandry)
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Fri, 20 Dec 1996 00:47:13 GMT
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Original-From:
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MAR ERICSON <mar@cooperSAYNOTOSPAM.edu>
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Viewed:
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2261 times
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> Kind of in a jam...
>
> Have heard conflicting advise (thaks again to everybody who bothered to
> give it)...My design group wants to come to a decision about powering
> our two Polaroid Ultrasonic tranducers....
>
> * One set of opinions has advised that we can power our sonar off of the
> HandyBoard's power supply.
Yes, you can use the +5v regulated power bus to power the ranging module. That's all the power you need for a Polaroid US system.
> HandyBoard's power supply.
That's 2500 mA. (through the power lines of the renging module) At least that's what the specs say. Who knows really unless you measure it.
> * We have also heard that because that sensors draw up to 500mA for a
> brief period of time while their "pinging" we run the risk of resetting
> the handyboard.
Never happened to me...
If you're really concerned, look up the specs of the LM??? Voltage Regulator that feeds the 5V bus of the HB. See if it can handle the 2.5 A surge for how long.
Don't worry about the NiCd's, they can handle the surge.
>
> Can anyone give me more clarification? Thanks again.
Another idea is to buy a 5V regulator that CAN ABSOLUTELY handle the 2.5A and connect it to the 9.6V NiCd pack.
Hope this clarifies.
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Message is in Reply To:
 | | (Polaroid quandry)
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| Kind of in a jam... Have heard conflicting advise (thaks again to everybody who bothered to give it)...My design group wants to come to a decision about powering our two Polaroid Ultrasonic tranducers.... * One set of opinions has advised that we (...) (28 years ago, 19-Dec-96, to lugnet.robotics.handyboard)
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