12 Threads found on edaboard.com: Thd Measurement
I am working on Project of AC power Analyzer Using Micro-controller (Arduino) , in which i need to Measure RMS Voltage , RMS Current , Active power, Reactive power , Power Factor and Harmonic value of 1st to 10Th Odd Harmonic and Last thd.
at present status I am Abel to measure RMS Voltage , RMS Current , Active power, Reactive power
Electromagnetic Design and Simulation :: 08-11-2016 15:20 :: Miteshdesai86 :: Replies: 5 :: Views: 842
What 'other frequencies' are you speaking about? Are you talking about noise? If so, that's why there is also a specification for thd+noise. The specification for thd is based on a measurement of a sine wave input. YOUR signal may not be "made of only harmonic frequencies", but the way thd is determined is with a single (...)
Digital Signal Processing :: 11-04-2015 16:56 :: barry :: Replies: 10 :: Views: 617
While analyzing a DC-DC regulator circuit,
we use "power ripple" to describe the quality of power supply,
do we also use "total harmonic distortion(thd)" in power circuits?
More curious to know, when simulating such kind of circuits, do we use fourier analysis
to get the mentioned "power ripple" or
do we just use cursor
Power Electronics :: 07-23-2013 07:14 :: Julia2013 :: Replies: 4 :: Views: 1285
Almost all literature refer to compression point and intercept point measurements in terms of input&output power.
When simulating a simple 2stage opamp, that has been designed to drive a capacitive load, how do you setup the simulation for input & output power ?
Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 10-31-2011 10:32 :: fassage :: Replies: 0 :: Views: 998
This is another method:
If you can measure the total power (usually this is done in time domain) and the dc and 1st (funtamental) components, you have
Harmonics_power = Total_power - DC_power - Fundamental_power
It this way, in theory all harmonics are included. The problem is that in the case thd is low, as this is calculate
Elementary Electronic Questions :: 05-18-2011 01:53 :: zorro :: Replies: 2 :: Views: 1114
fundamental, pure sine wave= 50hz
2) harmonics injected= 100 hz ( ie, 1st harmonic) ( harmonics is the integral multiple of fundamental wave)
then we add both pure and harmonic , to get combination = distortion ( shown in gragh as combination)
then we pass through filter, and reproduce pure sine wave.
now here,, next step is to find out
Power Electronics :: 04-06-2011 06:32 :: rashmi venugopal :: Replies: 1 :: Views: 798
You don't measure the input power. It's actually V1*I(V1).
As a hint: You can also determine the power factor from an I1 fourier transformation respectively thd measurement.
Analog Circuit Design :: 08-04-2010 14:00 :: FvM :: Replies: 3 :: Views: 1398
how can i measure HD3 ,thd, IIP3, IIM3 using cadence analog environment for cmos ota design
please reply soon......its urgent
thanks in advance :)
Analog Circuit Design :: 03-15-2009 16:05 :: shweta_eda :: Replies: 4 :: Views: 2140
hi can anyone give me some reference books or examples?
Analog Circuit Design :: 04-10-2007 00:25 :: zxasqw123 :: Replies: 0 :: Views: 1451
I am trying to measure the above mentioned dynamic specs of an ADC in Spectre. My ADC is a pipelined, 8-bit and operating at 80MSPS. What i am doing is giving a sinusoidal input of 9MHz and sampling frequency of 60MHz. The input frequency i decided using fin/fs=Mc/M formula. I am using transient simulations with strobestart=1/60MHz and strob
Analog Circuit Design :: 03-06-2007 05:42 :: vijay_nag :: Replies: 14 :: Views: 12584
There are several ways to measure the SHA in the lab:
1) Direct measurement: if your SHA can drive 1Mohm impedance, then you can hook up your SHA to the spectrum analyzer and measure the thd, SNR, etc;
2) Indirect measurement: have another ADC with higher accuracy and higher bandwidth. But you need to be careful about the possible (...)
Analog Circuit Design :: 03-31-2006 18:37 :: willyboy19 :: Replies: 3 :: Views: 865
this link is reference to the subject of this post, I interesting in any document that learn in how to measure and testing the amplifiers like IHF (Institute of High Fidelity) , Power, thd, TIM, frequency response, etc..... any information is welcom org is dedicated to te
Analog Circuit Design :: 05-20-2004 05:19 :: MCMC :: Replies: 0 :: Views: 1264