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Type: Posts; User: curious_mind

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  1. Replies
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    Closed: Re: power supply residual voltage

    I could kind of solve this issue a bit. I just connected the power supply chassis ground to protective earth and I could get a criteria-A performance for 4kV surges. However, arduino resets for EFT...
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    Closed: Re: power supply residual voltage

    Hi

    The residual voltage was additional +/-12V over 12V DC supply. This lasts for about 10us. Arduino regulator output gets reset in this situation.
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    Closed: power supply residual voltage

    I have a tdk lamda power supply CUT35-522, which is 230V input, 5V,+/-12V output. I am using +12V output to power my arduino board with LCD. It works fine.
    The power supply claimed immunity to surge...
  4. Closed: Natural frequency of second order system

    Given a second order system such as low pass filter written in standard form, how do we the fix natural frequency of the system? Can wn become the design goal of a control system?
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    Closed: Re: Fixed point PI Controller

    Hi FvM

    I am new to this stuff. Multiplying Ki by 32767 gives me value that is greater than 16 bits. Do you suggest mixing different Q formats for different variables? Taking my own requirement,...
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    Closed: Re: Fixed point PI Controller

    Hi FvM
    Particularly I was interested about converting Ki values to Q15 format. Should I choose Q32 instead?
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    253

    Closed: Fixed point PI Controller

    Looking for a practical implementation of fixed point PI controller using MCU. Simulation in laplace domain has fetched Kp=0.1 and Ki= 1.75 as results. My ADC 16 bit data input is 2's complement...
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    Closed: Metering Circuit Protection

    I am developing energy metering circuit and I have to provide EFT/surge protection circuits for current transformer inputs, optocoupler and relay outputs
    I am currently referring to...
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    Closed: Re: Motor winding Temeparture

    I have an induction motor that runs at constant speed. No VFD
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    470

    Closed: Re: Motor winding Temeparture

    Can we just not measure current , why temperature is required?
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    Closed: Motor winding Temeparture

    I was going through the article from the link https://www.efficientplantmag.com/2004/07/temperature-monitoring-is-key-to-motor-reliability

    I was wondering as the reason the motor gets over heated?...
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    Closed: Re: overvoltage protection

    Hi betwixt

    Looking for protection on 5V side. TVS would only suffice or any other combination is required?
  13. Replies
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    Closed: overvoltage protection

    I have a fully qualified EMI/EMC power supply that guarantees output of 5V +/-5% when subjected to hostile EFT/surge signals. As a double precaution, I would like to add additional protection device...
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    Closed: Re: Goertzel Algorithm direct form

    OK, I do have confusion about the final equation after N iterations. Referring to the link, https://stackoverflow.com/questions/11579367/implementation-of-goertzel-algorithm-in-c
    Where does real =...
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    Closed: Goertzel Algorithm direct form

    I was referring to this site https://www.codeproject.com/Articles/841228/Second-Order-Goertzel-and-Reinsch-Algorithm to understand the goertzel algorithm. I am not clear as the article explains that...
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    Closed: Re: IIR filter response not infinite

    Hi FvM

    Thanks for pointing it out. It was a typo. It was actually impulse of (c2d(continuous function)). Just to know more, how far will the response last. In matlab, there isn't any resolution...
  17. Closed: application of Laplace and Fourier Transform

    The question is regarding difference between Bode plot and Frequency response plot through Fourier transform. Since Bode plot is the outcome of laplace transform, the fundamental question arises as...
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    Closed: Transfer function of digital filter

    Recently I was reading about moving window DFT algorithms and their clones such as short time FT and sliding window DFT. They can also act as notch filters in several applications. I wanted to know...
  19. Closed: feel of diffrential equations for Novice

    Hi

    I encounter lot of problems to solve DE. I am interested in modeling a physical phenomena with DE and then verifying the model. Is there a way to do it?
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    Closed: Re: Digital phase lead in MCU

    Hi

    I measured 1 degree through the oscilloscope (phase1-phase2). Can we digitally phase shift?
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    1,049

    Closed: Re: Digital phase lead in MCU

    Hi
    Input signals are 50Hz, sampling frequency is 2500 Hz. How to delay the samples?
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    Closed: Re: Digital phase lead in MCU

    Hi

    I use a Simultaneous sample ADC in between the signal and MCU. How do I lag signal B by 1 degree. Any sample c code ?
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    Closed: Digital phase lead in MCU

    Hi

    I have two input signals A and B , which are sinusoidal in nature. All that I have to do is to ensure that both signals are exactly in phase. I have observed that A lags B by 1 degree. How do I...
  24. Closed: Re: [moved] can we avoid antialiasing filter?

    Hi
    If I use simultaneous sampling ADC, can I expect the common mode cancelled then?
  25. Closed: [moved] can we avoid antialiasing filter?

    Hi

    I am pretty new to signal processing. The following are my queries

    I have two analog inputs a and b , input ranging between 0-3V DC. All I have to do is to take ratio of this signal in a...
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