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  1. Replies
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    [SOLVED]Closed: Re: problem with coding 123

    Hi,


    Do you think you find a single person in this forum who does not think reading documents is boring?

    Thereīs no way around.

    Klaus
  2. Replies
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    Closed: Re: Tracking Phase comparator Logic

    Hi


    Then you donīt need to accumulate something, you just need to measure the phase difference.

    If phase difference is 5us --> show 5us (= "1" )
    If phase difference is 10us --> show 10us (=...
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    Closed: Re: Tracking Phase comparator Logic

    Hi,

    What about a sketch and/or timing diagram?

    "Phase should be accumulated", means:at the beginning, if phase is 5us then the result is "5us" .... if at the next period the phase still is 5us...
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    Closed: Re: Tracking Phase comparator Logic

    Hi,

    I'm still not sure whether you want a digital system or an analog system.

    XOR --> low_pass_filter --> analog value
    You may use an additional DFF to find lead/lag information.

    Or you use...
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    Closed: Re: MOC3020/BTA41 circuit problem

    Hi,

    In the link they talk about a three phase system, where the load connection is delta wired.

    So do you have a three phase system?
    And is your load delta wired?

    ******

    Zero cross there...
  6. Closed: Re: [PIC] Car Cooling System PSU Design Related

    Hi,

    If you want to regulate the power of a peltier you need to control the voltage...somehow
    You can't keep voltage at constant 15.0V.

    Again my recommendation:
    * Try to focus on current...
  7. Replies
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    Closed: Re: Tracking Phase comparator Logic

    Hi,

    The obvious thing is to use a "phase comparator circuit".
    But most probably you already tried/simulated this and failed .... otherwise you did not start this thread.

    good that you know...
  8. Replies
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    [SOLVED]Closed: Re: problem with coding 123

    Hi,


    There's nothing wrong with it.


    No. This is a more complicated way to check if it operates....but it's no way to check accuracy, because the error (inaccuracy) of your analog value as...
  9. Replies
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    Closed: Re: 1.5kw DC to DC Boost Converter Circuit

    Hi,

    VDD voltage is explained in the datasheet.

    Where to get it from?
    Somewhere from you application. But we don't know this. Usually the same supply as all the other logic circuitry.

    I...
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    Closed: Re: What does lumped port mean؟

    Hi,

    A simple internet search gives a lot of explanations and more detailed documents.
    Did you try this in your own?

    Go through a couple of them.
    If there still are questions feel free to ask...
  11. Closed: Re: Design Resource For Wireless Power Transfer

    Hi,

    https://lmgtfy.com/?q=rfid+coil+design

    Klaus
  12. Closed: Re: Design Resource For Wireless Power Transfer

    Hi,

    For RFID in the milliwatts range...
    Or for an induction stove in the kilowatts range...

    Klaus
  13. Closed: Re: LTspice...splitting LT1243 output into two separate pulse streams

    Hi,


    use an inverter in front of the DFF_CLK_Input. .. to clock the DFF at the falling edge of U1_ouput.
    The additional delay gives extra relaxed timing.


    Klaus
  14. Closed: Re: Connect MQ135 Gas Sensor to Raspberry Pi 3B+

    Hi,


    My question was not about supply range. It was about input range.


    My question was for "in this configuration" ... and I referred to your: " connected the ADC0 input with the 5v pin of...
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    [SOLVED]Closed: Re: Metastabilty and data loss

    Hi,

    Metastability is caused by violating setup and hold timing.
    On may avoid it by using a synchronized signal. This may be impossible.

    Then yes: reduce the chance for metastability by using...
  16. Closed: Re: Rectifier diodes with bypass capīs & gounding speaker basketīs

    Hi,


    All we can do is guess.

    If you want a reliable answer then buy a resistor from a reliable source with detailed informations like resistor_maufacturer and exact type or partnumber.
    ...
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    [SOLVED]Closed: Re: Distance between MCU-Phy-Magnetics-RJ45

    Hi,

    so the paper already gives the answer to the question: Itīs to reduce EMI.

    Now I donīt have the HF knowledge to verify this statement. So what can I do?
    * accept it and design the circuit...
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    [SOLVED]Closed: Re: Metastabilty and data loss

    Hi,


    No, metastability = X = undefined

    But a synchronizer output should be considered as a defied logic level.
    Afaik a sysnchronizer can not completely 100% metastability at itīs output,...
  19. Closed: Re: [PIC] Car Cooling System PSU Design Related

    Hi,

    I'd go for
    * either 12V system
    * or 24V system.
    don`t go the mixed way.

    I tend to a 24V system because of the lower currents = lower expectable loss = less heating.

    Klaus
  20. Closed: Re: Rectifier diodes with bypass capīs & gounding speaker basketīs

    Hi,


    The bigger noise compared to metal film resistors here is of no interest. Any other noise around this resistor is magnitudes higher.

    But carbon resistors have better pulse rating...
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    Closed: Re: How many devices can we have on SPI?

    Hi,

    Theretically infinite.

    * each one needs a unique /CS signal
    * you need to consider bus capacitance and dtive strength of each device....or use buffers, MUX, selectors....

    Klaus
  22. Closed: Re: [PIC] Car Cooling System PSU Design Related

    Hi,

    Most probably the high side driver does not work as expected .... because it can only work with duty cycle less than 100%, because of it's bootstrap circuit. It is explaind many times here in...
  23. Replies
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    [SOLVED]Closed: Re: Metastabilty and data loss

    Hi,


    X means the state is undefined = unknown.
    So if you send a "1" .... and you can't be sure the output is "1", then the output hast to be considered "false".
    It doesn't matter if the...
  24. Closed: Re: [PIC] Car Cooling System PSU Design Related

    Hi,

    I didn't go through the complete circuit.

    A couple of issues.
    You say this circuit is for "cooling". But then there are a lot of diodes in the power path...and additionally a FET to drop...
  25. Closed: Re: Error while trying to compile a header file in Xilinx SDK

    Hi,

    What compiler?
    What target device?

    Klaus
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