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Article #21180

Re: Light Duration Meter

#21180
From: Micha Berger
Date: Tue, 18 Apr 1989 13:46
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I wrote:
> Here's my 2 cents. Use an op-amp integrator to integrate instead
> of the capacitor.  Have a photocell as the input voltage to be integrated.

Matt Pressly wrote:
> It looks like even small leakage through the feedback capacitor in the
> integrator would cause pretty inaccurate readings, especially after
> integrating over a period of around 12 hours.

Sorry 'bout that. My "experience" with circuit design was at
Columbia Univ. You ever notice that when you are a student
capacitor's don't leek, noise isn't a function of circuit layout,
etc...
Which leads me to make next suggestion:
	All employers: Hire colledge students to design and assemble
	your product. The obvious advantage of putting out circuits
	that use ideal components will eat up the extra R&D costs.
Seriously, why isn't their a course on "Removing the Simplifying
Assumptions"?
-- 
					Micha Berger				     
Disclaimer: All opinions expressed here are my own. The spelling, noone's.
email: ...!cmcl2!hombre!dasys1!aj-mberg	       Aspaklaria Publications
  vox: (718) 380-7572			       73-32 173 St, Hillcrest, NY 11366
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Path: arc1-ca.pugleaf.net!utzoo!dptcdc!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ukma!rutgers!cmcl2!phri!cooper!dasys1!aj-mberg
From: aj-mberg@dasys1.UUCP (Micha Berger)
Newsgroups: sci.electronics
Subject: Re: Light Duration Meter
Summary: School vs Reality
Message-ID: <9380@dasys1.UUCP>
Date: 18 Apr 89 13:46:11 GMT
References: <102@raider.MFEE.TN.US> <9318@dasys1.UUCP> <1974@godiva.oakhill.UUCP>
Organization: The Big Electric Cat
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