Submitted by Louis Beetge (not verified) on Sun, 01/31/2010 - 18:30.
Hi Trystan
I eventually bought an efergy CT an got my meter working. I also hooked up a 16x2 LCD display that scrolls through the different readings with a pushbutton. So the next step for me is to build the voltage sensing circuit. I'd just like to say thank you for your help so far.
I have one question. When I read the current from my power meter (for my desktop PC), I get a reading of say 0.81A. I borrowed a friend's clip on DMM and this gives a reading of about 0.63A. However, when I hook up a 2000W hairdryer, my meter gives a reading of about 5.45A, and the DMM gives a reading of 7.8A. Could this difference be because my meter is measuring Irms and the DMM is measuring Ipeak or should I be concerned about my meter's accuracy?
I can't find a datasheet on the DMM. It's a MajorTech MT750. It seems to be a discontinued meter.
Hi Trystan I eventually
Hi Trystan
I eventually bought an efergy CT an got my meter working. I also hooked up a 16x2 LCD display that scrolls through the different readings with a pushbutton. So the next step for me is to build the voltage sensing circuit. I'd just like to say thank you for your help so far.
I have one question. When I read the current from my power meter (for my desktop PC), I get a reading of say 0.81A. I borrowed a friend's clip on DMM and this gives a reading of about 0.63A. However, when I hook up a 2000W hairdryer, my meter gives a reading of about 5.45A, and the DMM gives a reading of 7.8A. Could this difference be because my meter is measuring Irms and the DMM is measuring Ipeak or should I be concerned about my meter's accuracy?
I can't find a datasheet on the DMM. It's a MajorTech MT750. It seems to be a discontinued meter.
Any help and insight would be much appreciated
Louis