Products > Test Equipment
Accurate Low Amp Current Probe Advice
DaneLaw:
The pictures aint consistent, it cycles between 1x and 10x, the vpp-values on the sig-gen, also vary.
It was more an attempt to see how little noise it could muster at relatively low values, the LP-bandwidth filters do make quite an impact...
Yes 1mV/10mA on CC65, scope with 30KHz LP, with averaging and 10 Ohm resistor as load...
The values in itself, take it with a pinch of salt, its 9v battery was down in the high 6v region, so far from ideal but the only 9v I had on hand.
Will try to take a look at both ETCR007A and CC65 when I get some 9v batteries..
CC65 (60A 20KHz) 2 settings. [1mV/10mA & 1mV/100mA]
ETCR-007A (50A 100KHz) 2 settings [10mV/A & 100mV/A]
KungFuJosh:
I have a CC65 coming today to play with. I'll see how it does compared to the crappy one I'm returning today. 😉
BILLPOD:
My CC-65 gives me VERY inconsistent results. I test it with known small currents
of under 10 mA and some times it's right on the money, and sometimes it is off by 20 mA. I find that I can't trust it's results. I've tried it with high end DMMs and oscilloscopes. :scared:
Conrad Hoffman:
I'll mention the HP428 again. It has a full scale range of 1 mA. They're not uncommon and can often be had for under a hundred bucks. A DC instrument. Some detailed info:
https://www.prc68.com/I/HP428.html
https://www.diyaudio.com/community/threads/modernized-hp428-clone.270510/
KungFuJosh:
The CC65 arrived today, and my expectations are that it will be better than the other crappy probe, and besides that, probably still pretty crappy.
I ordered the Tek TM502A / AM503B / A6302 Probe on eBay. I expect that to be a little better.
Thanks,
Josh
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