11 Threads found on edaboard.com: Thd Measurement
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 11:56 :: barry :: Replies: 10 :: Views: 513
thd measurement is used to analyze AC signals. I think you dont need thd measurement because your output is DC. You just need to meter output voltage ripple. This measurement will show u quality of the SMPS output. Your output will be DC + AC(ripple). So your main signal is DC and some AC ripple. You dont (...)
Power Electronics :: 07-23-2013 06:22 :: fethiyeli :: Replies: 4 :: Views: 1122
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 06:32 :: fassage :: Replies: 0 :: Views: 888
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 :: 05-17-2011 21:53 :: zorro :: Replies: 2 :: Views: 1060
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 02:32 :: rashmi venugopal :: Replies: 1 :: Views: 747
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 10:00 :: FvM :: Replies: 3 :: Views: 1338
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 12:05 :: shweta_eda :: Replies: 4 :: Views: 2044
hi can anyone give me some reference books or examples?
Analog Circuit Design :: 04-09-2007 20:25 :: zxasqw123 :: Replies: 0 :: Views: 1355
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 00:42 :: vijay_nag :: Replies: 14 :: Views: 11947
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 13:37 :: willyboy19 :: Replies: 3 :: Views: 820
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 01:19 :: MCMC :: Replies: 0 :: Views: 1211