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10 Threads found on Filter Design Issues
You should show at least a block diagram, preferably a detail schematic. The only reason I can imagine why the output filter is causing a SMPS shut down is that the 750 ?H inductor is the only output filter of a buck converter and already saturated at low output currents due to wrong design.
Hi, I'm trying to build a filter for a resolver. I'm getting issues with noise spikes where I will get a sample that is way out of proportion with other samples. I have a pretty good design for filter minor glitches in the shaft angle, say up to 5 degrees off. But where I really need to do more filtering is (...)
I have setup an LED regulator (NCP3065 - ) using On Semiconductors design tool and it seems to have some serious issues, if anyone could take a look and give some feedback? Schematic: (Current circuit will not work with R3, C1, or C2) Works "flawlessly" withou
Hi guys, sorry to disturb you all. I am confused with the difference between gabor filter and a gabor wavelet? is there any difference? if so, what is the difference?
An option is to use a type-2 PLL (one integrator in the loop filter). The output of the VCO is inquadrature with the input over the whole lock range. Possible design issues to consider: acquisition time, tracking if the frequency changes quickly, phase noise, wide-range VCO. The last one can be solved with a frequency conversion, i.e., (...)
How big role coefficients play i designing the a digital filter.?? whether a filter can be normalized using its coefficients??
Of course, some phase margin problems can be expected for each active filter as soon as the designed pole Q is relatively high. For example, consider an equal-component S&K low pass filter with a design value of Qp=10. In this case, the non-inv. gain is G=3-1/10=+2.9. That means you are very close to the stability limit. If (...)
I have used it, well certainly not to the most possible extreme, but to my knowledge, I have created a LPF, and had my resuts succesful, but had some issues with the cut-off frequency range. You first need to add FDA tool into your design. use the matlab tool to design your filter. After your design, just (...)
please guid about poly phase filter design
hehe opamp dc gain should be larger especially for first stage and match between error cancel digital filter and analog integrators