Hello! Colin and company, I haven't found a reason to contribute to this gathering, until I remembered a rather unusual display of technology accomplished by a chap in a part of the US, here's his location: http://www.picobay.com/projects/2009/01/real-time-web-based-power-charting.html
And that was brought to my attention from here: http://www.billporter.info/2010/12/19/not-so-tiny-power-meter/ The first mentioned here: http://www.kmitl.ac.th/~kswichit/89S52/89S52.htm Please note that none of these are using One-Wire technology for their data gathering and manipulation efforts. In fact the important aspect is the simplicity behind each sensor. ----- Gregg C Levine gregg.drw...@gmail.com "This signature fought the Time Wars, time and again." On Sun, Feb 9, 2014 at 12:40 PM, Colin Reese <colin.re...@gmail.com> wrote: > I see - you're buying AC/AC CTs. I just buy DC current or voltage output. > Needn't mess with it. > > > > On Feb 9, 2014, at 9:14, Marc dirix <m...@dirix.nu> wrote: > > I use the opamp to integrate the half sine output of the clamp. > > > > > On Sun, Feb 9, 2014 at 6:05 PM, Colin Reese <colin.re...@gmail.com> wrote: >> >> What do you need an op amp for? I use these things all over the place and >> plug them straight into adcs, as long as the internal resistance is >> sufficient >> >> >> >> On Feb 9, 2014, at 6:59, Marc dirix <m...@dirix.nu> wrote: >> >> Hi Chris, >> >> I think every reseller should be able to sell you one, because for their >> system you need to buy loose clamps if your connection is 3-fase. >> I've bought mine from bespaarbazaar.nl (obviously in the Netherlands). >> >> Amazon seemed to have sold them: >> http://www.amazon.co.uk/Current-Cost-Sensor-Clamp-CT/dp/B002FVNQHQ >> >> Best regards, >> >> Marc >> >> >> On Sun, Feb 9, 2014 at 2:29 PM, Chris Green <c...@isbd.net> wrote: >>> >>> On Sat, Feb 08, 2014 at 07:59:43PM +0100, Marc dirix wrote: >>> > Hi, >>> > I've made an 1-wire interface for the current cost clamps. The >>> > current >>> > cost clamp is specified 100A with 50mA accuracy. You can buy spare >>> > current >>> > cost clamps for about 15 euro. The interface is a simple >>> > opamp+DS2450. On >>> > request I'll send you the eagle schematic. >>> >>> So what exactly is a "current cost clamp" and where can I buy one? >>> >>> ... ah, I sort of see, it's something for seeing how much your >>> electricity is costing you. >>> >>> However I can't see anywhere that sells just the clamps, can you point >>> me at a supplier please. >>> >>> >>> -- >>> Chris Green >> -- >> Marc Dirix Computers >> Schmeddingstraat 24 >> 6361AZ Nuth > ------------------------------------------------------------------------------ > Managing the Performance of Cloud-Based Applications > Take advantage of what the Cloud has to offer - Avoid Common Pitfalls. > Read the Whitepaper. > http://pubads.g.doubleclick.net/gampad/clk?id=121051231&iu=/4140/ostg.clktrk > _______________________________________________ > Owfs-developers mailing list > Owfs-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/owfs-developers > ------------------------------------------------------------------------------ Managing the Performance of Cloud-Based Applications Take advantage of what the Cloud has to offer - Avoid Common Pitfalls. Read the Whitepaper. http://pubads.g.doubleclick.net/gampad/clk?id=121051231&iu=/4140/ostg.clktrk _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
