Recent content by shenyee

Hi NNG, I follow the steps you mention above to save the voltage/current waveform from oscilloscope in the extension of *.CSV. The problem now is I cannot convert or open it in the TOP software. During my conversion, there is a message coming say, there is a missing value around line one...

Thank you for all of you that reply.

Hi NNG, I have look for the sotware that you mention. I am using Tektronix TDS3054B oscilloscope, but I don't how to save my voltage or current output in .csv format. Or may be this type of oscilloscope not suitable for the TOP software. Anyone can help?

But do anyone have an economic method for measuring harmonic? Because my lab doesn't have the equipment by the way I'm short of time.

Anyone here can suggest to me how to measure harmonic and total harmonic distortion from a induction motor controller? I can see the distorted waveform through the oscilloscope and the FFT. But the thing I required must be very detail, for example, the value of 3rd harm, 5th harm, 7th harm and...

Dear All, Recently, I try to collect a set of data from PWM controller that control the speed of a three-phase induction motor. The problem is how to measure the efficiency of the motor. It's related with the electrical power input and mechanical power output. That's no clear description...

Hello to everybody here! I would like to ask is there anybody here have read about Don Lancaster's "Magic Sinewaves" before? I'm doing some thing about induction motor speed control that may have related to his idea. Could you please give me a hand. I do appreciate that!