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Article #837Re: How to convert weight to volts?
From: Rick Karlquist
Date: Mon, 17 Jul 1989 16:06
Date: Mon, 17 Jul 1989 16:06
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> I'd like to build a small (pocket-size) weight scale, with a range of
> about 1 to 20 kilograms and accuracy about 1%. If I get voltage, I can
> surely handle the rest. But what to use as the converter?
>
> The catch: I prefer the converter not to cost more than $20.
> --
> Juha Kuusama, kuusama@korppi.tut.fi ( ...!mcvax!tut!korppi!kuusama)
Interlink Electronics, Santa Barbara, CA makes "Force-sensing resistors"
They are much cheaper than strain gages and also don't require exotic
instrumentation amplifiers either. Should be ideal for your application.
Their phone number is (805)-965-5155.
Rick Karlquist
rkarlqu@hpscdc.hp.com
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!hplabs!hp-ses!hpcuhb!hpscdc!rkarlquReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!hplabs!hp-ses!hpcuhb!hpscdc!rkarlqu From: rkarlqu@hpscdc.HP.COM (Rick Karlquist) Newsgroups: sci.electronics Subject: Re: How to convert weight to volts? Message-ID: <5770019@hpscdc.HP.COM> Date: 17 Jul 89 16:06:49 GMT References: <7903@etana.tut.fi> Organization: Hewlett-Packard, Santa Clara Div. Lines: 15