Article View: sci.electronics
Article #21136Re: Light Duration Meter
From: Matt Pressly
Date: Thu, 13 Apr 1989 17:09
Date: Thu, 13 Apr 1989 17:09
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In article <9318@dasys1.UUCP> aj-mberg@dasys1.UUCP (Micha Berger) writes: >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. 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. -- address: mattp@oakhill
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ukma!rutgers!cs.utexas.edu!oakhill!mattp From: mattp@oakhill.UUCP (Matt Pressly) Newsgroups: sci.electronics Subject: Re: Light Duration Meter Message-ID: <1974@godiva.oakhill.UUCP> Date: 13 Apr 89 17:09:07 GMT References: <102@raider.MFEE.TN.US> <9318@dasys1.UUCP> Reply-To: mattp@godiva.UUCP (Matt Pressly) Organization: Motorola Inc., Austin Tx. Lines: 9