It wasn't Analog Devices, like I thought, but Teridian Semi, and division of Maxim, who makes the chips. The part number in question was a 71M6511. The app note is 4889.pdf from Maxim.
Best, Will *********** REPLY SEPARATOR *********** On 6/27/2011 at 5:03 PM Will Matney wrote: >Jason, > >I've read some about the new meters, but AEP hasn't touched any of >ours...yet. They have demand monitoring here too, and you are correct, it >can really rack up a power bill. A good friend that owns a machine shop >watches his all the time. Once you get three phase power, the costs >skyrocket, as they bill you for all kinds of things. That was why I made >the decision of using a phase converter that time, and buying all of my >machinery with 230 Vac motors, though some were dual voltage. > >Without really setting down and looking at the circuitry on the new meters, >its hard to say what might happen, as I was speculating earlier. The last >PDF I read, was about the circuits they added to stop folks from bypassing >them, or stealing the electricity. I think that it was Analog Devices who >were making the IC's for these, but I may be wrong. There was 2-3 app notes >I read, as I was interested in seeing how they did it. > >You are also right, in that they will do away with the meter readers. If I >recall, I read that they use a radio link to send the info back to the >office, or something similar. > >Best, > >Will > >*********** REPLY SEPARATOR *********** > >On 6/27/2011 at 3:38 PM Jason Rabel wrote: > >>Will & Bill, >> >>Our (commercial) three phase power is fed by only two high-voltage wires >(7,200v I think) which each pole has a pair of >>transformers. I can only assume one generates the 220v single phase lines >and the other is the high-leg delta. Around here 230v >>three phase delta seems to be more common than 208v Y style. >> >>I remember a couple years ago we had a transformer die (thankfully it was >a passive failure and not a massive fireball on the pole). >>People were wondering why their machines weren't working (but the lights >were on)... Sure enough hooking up a meter and the high leg >>was dead... >> >>I did read somewhere that this change might have an effect on demand >meters? There was no further explanation unfortunately, but >>that does kind of worry me as I know about 90% of the meters on our >property are that style. The power company just loves to tack on >>a "demand charge" to the bill, which can often double, or triple the cost >of your electric... Just because you want to have the >>lights on, A/C running, and an air-compressor... :( >> >>I've never seen or heard of anyone here in Houston with three phase >residential (except for farmers, but I guess they are >>commercial). >> >>Centerpoint Energy has reached the epitome of laziness and is converting >everyone over to "smart meters" so people can better >>monitor their usage... In reality it does nothing more than offer >real-time monitoring for the power company, and they no longer >>have a use for meter-readers... >> >> >>_______________________________________________ >>time-nuts mailing list -- [email protected] >>To unsubscribe, go to >https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>and follow the instructions there. >> >>__________ Information from ESET Smart Security, version of virus >signature database 5851 (20110206) __________ >> >>The message was checked by ESET Smart Security. >> >>http://www.eset.com > > > > >_______________________________________________ >time-nuts mailing list -- [email protected] >To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >and follow the instructions there. > >__________ Information from ESET Smart Security, version of virus signature database 5851 (20110206) __________ > >The message was checked by ESET Smart Security. > >http://www.eset.com _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
