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Registered Member #1403
Joined: Tue Mar 18 2008, 06:05PM
Location: Denmark, Odense C
Posts: 1968
Do you have any Pearson current monitors to test it up against? Looking at the data sheets for Pearsons 0.001V/A products, this one lands somewhere around the middle at a much reduced frequency range.
From the rating I would be most interested in seeing comparison from high current pulse discharges.
It was pointed out to me that this was 1mV/A, which means even a large 500A current will only look like 0.5V on a scope! So just something to keep in mind. I can see this being useful for pulse discharges, though!
May I point out that there are other current probes on ebay as well, e.g: and which might be more useful? Data here:
Registered Member #58118
Joined: Sat Dec 12 2015, 12:34AM
Location: Sanger, Texas
Posts: 14
I had actually thought about buying the one that's .01V/A before I got this one, but that would limit me to 1000 amps maximum with my scope... Unless I build or buy a /10 adapter. (Assuming my math is correct)
Registered Member #1403
Joined: Tue Mar 18 2008, 06:05PM
Location: Denmark, Odense C
Posts: 1968
flyboy7777 wrote ...
I had actually thought about buying the one that's .01V/A before I got this one, but that would limit me to 1000 amps maximum with my scope... Unless I build or buy a /10 adapter. (Assuming my math is correct)
I bought one of the IPC 1mV/A, I will do some testing against my Pearson current monitors, despite they do not have quite the same ratings. I only bought this for pulse discharge measurements and he accepted 100$ offer because I described the high import taxes :)
A while back I bought two old Kay attenuators for exactly reducing signal strength by a adjustable ratio. A Kay 432D (0-101db) and a 1/432 (0-22.1db). Got both at 48 Euro.
I had actually thought about buying the one that's .01V/A before I got this one, but that would limit me to 1000 amps maximum with my scope... Unless I build or buy a /10 adapter. (Assuming my math is correct)
Hm for 10mV/A, that's just 10V at 1kA. How would that limit you to 1000A max? And if so, how would you use the scope to measure anything else (coil related, like gate voltages?)
Registered Member #3324
Joined: Sun Oct 17 2010, 06:57PM
Location:
Posts: 1276
loneoceans wrote ...
flyboy7777 wrote ...
I had actually thought about buying the one that's .01V/A before I got this one, but that would limit me to 1000 amps maximum with my scope... Unless I build or buy a /10 adapter. (Assuming my math is correct)
Hm for 10mV/A, that's just 10V at 1kA. How would that limit you to 1000A max? And if so, how would you use the scope to measure anything else (coil related, like gate voltages?)
Into a 50 Ohm load, often oscilloscopes will limit your voltage for a 50 Ohm load, for example my LeCroy scope only allows up to 5V @ 50Ohm input. unless you use an external 50Ohm load, of course. I believe that's what Flyboy was referring too.
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Nice Current monitors ($135) on Ebay...
