glenjoy
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aji said:Hi,
I am an electrical engg from india.I think you are measuring powerfactor.
for that first u have to step down 230v and connect it to an opto-coupler.Add resistor inthe current path and add opto coupler parallel to it.u should ensure I*R must be capable of driving led of opto.then using cature or counter feature of a micro find time interval between zero crossing of 2 waves .This count gives phase diff in terms of time.U can convert this any form
Regards
Ajith.S
aji said:Hi Glenjoy,
I think your idea is not realisable(ie you cannot measure pf of the whole circuit of a house by just plug in a device at an end.Hall effect senor will not ba solution to this.Refer any text books or web.There are optical sensor(Faraday Effect)but you cannot use that also in this project.You can only measure freqency and voltage by this method.You have connect in seris with the ckt to measure KW,KWh and pf
Regards
Ajith
glenjoy said:aji said:Hi Glenjoy,
I think your idea is not realisable(ie you cannot measure pf of the whole circuit of a house by just plug in a device at an end.Hall effect senor will not ba solution to this.Refer any text books or web.There are optical sensor(Faraday Effect)but you cannot use that also in this project.You can only measure freqency and voltage by this method.You have connect in seris with the ckt to measure KW,KWh and pf
Regards
Ajith
Hi,
I think it is possible, have you seen the power factor correction used at homes? They are just plugged into household sockets. No wires are cut to put the ammeter in-between.
kumar said:glenjoy said:aji said:Hi Glenjoy,
I think your idea is not realisable(ie you cannot measure pf of the whole circuit of a house by just plug in a device at an end.Hall effect senor will not ba solution to this.Refer any text books or web.There are optical sensor(Faraday Effect)but you cannot use that also in this project.You can only measure freqency and voltage by this method.You have connect in seris with the ckt to measure KW,KWh and pf
Regards
Ajith
Hi,
I think it is possible, have you seen the power factor correction used at homes? They are just plugged into household sockets. No wires are cut to put the ammeter in-between.
Hi!
The device that is plugged in for power factor correction is an AC Capacitor. This device does not measure pf and then correct it.
kumar
glenjoy said:kumar said:glenjoy said:aji said:Hi Glenjoy,
I think your idea is not realisable(ie you cannot measure pf of the whole circuit of a house by just plug in a device at an end.Hall effect senor will not ba solution to this.Refer any text books or web.There are optical sensor(Faraday Effect)but you cannot use that also in this project.You can only measure freqency and voltage by this method.You have connect in seris with the ckt to measure KW,KWh and pf
Regards
Ajith
Hi,
I think it is possible, have you seen the power factor correction used at homes? They are just plugged into household sockets. No wires are cut to put the ammeter in-between.
Hi!
The device that is plugged in for power factor correction is an AC Capacitor. This device does not measure pf and then correct it.
kumar
Hi,
Kumar, sorry for that because I have not really seen a real power factor correction gadget, I just saw one in television the one advertised that can cut cost in electric bills.
Have you opened one of these gadgets? Are you sure that there is nothing inside but only a large capacitor and nothing else that measure the power factor and correct it based on the power factor read?
Thanks.
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