Re: [WISPA] [WUG] Monitoring AC Current

2011-02-24 Thread Randy Cosby
Why do you need to step that up instead of just using the 0-100mv input (labeled "shunt") on the packetflux sitemonitor. Not sure I'm following you. On 2/24/2011 3:43 PM, Matt wrote: > I need to monitor current on an AC line at a tower site. Like 5 amps > at 120 VAC. I would like to graph i

Re: [WISPA] [WUG] Monitoring AC Current

2011-02-25 Thread Matt
> Why do you need to step that up instead of just using the 0-100mv input > (labeled "shunt") on the packetflux sitemonitor.  Not sure I'm following > you. I want to monitor and graph current on a 120V AC line. Not DC current.

Re: [WISPA] [WUG] Monitoring AC Current

2011-02-25 Thread Blair Davis
Use a bridge regulator on the shunt.  Then meter the output of the bridge. On 2/25/2011 12:23 PM, Matt wrote: Why do you need to step that up instead of just using the 0-100mv input (labeled "shunt") on the packetflux sitemonitor.  Not sure I'm following

Re: [WISPA] [WUG] Monitoring AC Current

2011-02-25 Thread Blair Davis
That was supposed to be bridge rectifier ...On 2/25/2011 1:53 PM, Blair Davis wrote: Use a bridge regulator on the shunt.  Then meter the output of the bridge. On 2/25/2011 12:23 PM, Matt wrote: Why do you need to s

Re: [WISPA] [WUG] Monitoring AC Current

2011-02-25 Thread Matt
> Use a bridge regulator on the shunt.  Then meter the output of the bridge. Almost exactly what I am looking at doing now. Have PacketFlux 10 amp shunt on order. Will feed that into isolation transformer then with diode, capacitor and resisters convert that to a DC voltage. Am hoping with resi

Re: [WISPA] [WUG] Monitoring AC Current

2011-02-25 Thread Philip Dorr
What about using a Hall Effect current clamp? On Fri, Feb 25, 2011 at 2:38 PM, Matt wrote: >> Use a bridge regulator on the shunt.  Then meter the output of the bridge. > > Almost exactly what I am looking at doing now.  Have PacketFlux 10 amp > shunt on order.  Will feed that into isolation tran

Re: [WISPA] [WUG] Monitoring AC Current

2011-02-28 Thread Matt
> What about using a Hall Effect current clamp? Thought about that pretty hard. Actually ordered in some big cheap cheap torrids to go around the AC line. Never got time to try it though. >>> Use a bridge regulator on the shunt.  Then meter the output of the bridge. >> >> Almost exactly what I