#Evga precision x voltage at 12mv how to
#Evga precision x voltage at 12mv plus

I am more than happy to listen and change my mind. If you have another explanation, or you feel like I have been lied to, please explain yourself with actual theory, data, and calculations. I have been doing electronics for the last 7 years of my life, 2 of my uncles (who have masters degrees in electrical telecommunications engineering), as well as my professor of electric circuits (with a PH.D in some digital electronics design subject) have taught me that the resistance in a good meter while measuring current, is not significant to the current measurement value for any given range. For your peace of mind, here are my meters:Īnd here is why I say that that the shunt resistor in the mA range of a meter is only a couple of ohms: Almost reminds me of the YouTube comment section. I have a strong feeling you have never used a multimeter or clamp meter from the stuff you're making up. You can clearly see how incorrect the vales are when measuring current with a multimeter here. Yet any thoughts about my current measurements? I mean with the other multimeter I can do a new test with 30LEDs or 0,5m, but the test I did should indecate somewhat how much current is needed, yet it may not be as accurate due to resistance.

I may borrow a multimeter from school next week, as they are more recent than the one I used and they may have a bigger Range of operation for measuring current. Well at this time this multimeter is all I got. And if does not have a clamp meter already, then that is money he could have spent buying a good multi-meter in the first place. So for small currents, a crappy meter is somewhat better than a clamp meter. At a current in the order of (3*10^-2) A, you will get ± 2% (again not a big deal), but now with the 200mA range those 5 counts will only equate to about 1% of added relative error. Looking back at the error, most crappy meters will have 2000 counts too, with a precision of 2% ± 5 counts (based on experience with them). The mA range on the other hand, will have a shunt of a couple of ohms for most meters. This is important because the μA range has a rather large 400-ish ohm shunt in series.

Now take a cheap-o multi-meter without a μ A range. Again, for big currents, that is really not a big issue, but for the case here it is. This one in particular has been found to drift in the 2A range up to 40 counts after 1 minute with crappy batteries and 10 counts in a minute with decent batteries ( source).

#Evga precision x voltage at 12mv plus

that means that if you are gonna measure a current in the order of (3*10^-2) A, your precision is gonna be ☒% (not a big issue), and ☓ counts which considering the order of magnitude of your measurement will equate to about 10% of additional relative error, which is huge! Plus the fact that even after zeroed out, clamp meters tend to drift. Take a look at the uni-t product specification for the clamp mete, particularly at the current capabilities:Īnd consider this is a 2000 count meter.

#Evga precision x voltage at 12mv how to

That being said, please inform yourself before giving ill advice on how to use electronic equipment. First of all I apologize if I come across as pedantic or condescending, it is really not my intention. They are the most accurate way of measuring current. Putting the multimeter in line with the circuit will never give accurate values.Ĭlamp meters such as the 210E can measure down to a few milliamps of both AC or DC current. If you NEED to measure current with a multimeter you use a shunt.