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Ok, it is partially clear. I wanted to understand the reason for summation in the equation of convolution. Summation alters the entire distribution. OR can we take it as the same consequence of multiplying two polynomials, which results in multiplication and addition
As you know that analogies or examples are incomplete as they do have corner cases. But please explain the role of convolution. When to decide that we need convolution to solve a problem.
This is an elementary question on signal processing with analogy. To increase the quantity of anything, we may use either add or mul operator. Similarly, to reduce a quantity of something we can use either subtraction or division. Now what is the corresponding function or attribute we are...
I was browsing this link http://www.ecircuitcenter.com/Circuits/op_limiter1/op_limiter1.htm which provides amplitude limiter circuit using opamps and zener with inverting configuration. Help required to convert the same circuit with non inverting configuration. Also please explain why two zeners...
Let me again clarify. I require 0.1 deg accuracy in 360 deg span. In terms of timing it stands as 4us. I understand that PC2 or PC3 phase comparators(74HCT4046A) are capable of generating accurate phase difference between two signals ( I connect signal A to reference pin and B to VCO input pin)...
I found PWM to analog converter, https://www.analog.com/media/en/technical-documentation/data-sheets/LTC2645.pdf. Looks promising. PLL phase comparator generates Pulse width proportional to phase change. Connecting PLL to this IC can directly produce analog output. I wonder how settling times...
One important concern I have is that originally signals are sine waves and they are converted to square through ZCD. If sine waves are noisy then ZCD outputs will go crazy. Therefore I was thinking , if PLL could be used which can eliminate the noise (using loop filter). Using reciprocal...
Ok. Could you suggest a workaround. I haven't tested CD4046. (i am yet to buy and test it). Do you mean that type3 phase detector output do not generate analog outputs linearly and proportionally for the phase/frequency change?
I guess VCO input is proportional to phase difference. Can this not be used as a direct readout without going through VCO. Because I am not looking for a phase lock
I have two sine signals(50Hz) A and B. B changes its phase relative to A from 0 to 360 deg. All I need is DC voltage 0 to 10V indicating the phase, which will display in DPM.
I was looking for non software based solution. I looked at phase frequency detector IC, but all of them are for the...
I upscaled the float value and not the integer value. For example , coefficient c3=.036789. All I did was to multiply this by 16. I did this for all the 3 coefficients. The result is the angle (float) which is 16 times more than the intended. To bring it down, I multiplied the result with 1/16...
I have upscaled the coefficients by 16 times, this brings all the coefficients in 16 or 32 fixed point format. However the angle output is also scaled by 16 and I have to bring it down for correct output readings. unfortunately 1/16 does not fit into the 16 or 32 fixed point format. Please...
Oops that was a mistake. Yes it is 0.25 and not 0.125.
I applied the exact equation for 3.2 digit accuracy from the link http://www.ganssle.com/approx.htm
for cos(x) where x is 0-->pi/2, cos(x)=c1+x*x(c2+c3*x*x), here c1= 0.99940307, c2=-0.495558, c3=.03679168
results from matlab
c1-...
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