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Type: Posts; User: kripacharya

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  1. Closed: Re: electromagnetic compatibility tests question

    Yes. It is an iterative process.
  2. Closed: Re: How to get the Number of components before a specific net using Design Compiler?

    So you have to work out which TO is missing and why, and then how to correct this deficiency. Should be easy enough.
  3. Closed: Re: How to move metal elements via magnetic waves?

    It is interesting to note that unlike other 'force fields' which diminish in strength as the square of distance, a magnetic field degrades much more rapidly - of the order of at least cube of...
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    Closed: Re: Possessed IGBT will not turn ON

    Well ? What happened? Did it work ??
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    Closed: Re: Rotary capacitor physics and design

    Well said !
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    Closed: Re: Rotary capacitor physics and design

    You should consider magnetic coupling and also EM coupling. If the requirement of actual power transfer is not necessary, just the signal nature.



    400uF @ 1Mhz --> 0.4 milliohm. Why would you...
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    Closed: Re: Rotary capacitor physics and design

    I doubt your 'purpose' could be any more complicated than this thread itself. It would be useful to have some insight into what you're actually trying to achieve.
  8. Closed: Re: Pause and resume function in arduino lcd

    Without going through your (quite messy) code, I suspect your lcd goes blank because your cursor position is outside the display boundaries.
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    Closed: Re: Design of 45 degree slant polarizer

    What are you talking about?
    :thinker:
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    Closed: Re: Led project. Led on at nightime.

    At some point you yourself will have to do some work.
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    Closed: Re: Goertzel Algorithm direct form

    I think the article explains exactly this in great detail. The purpose is to not repetitively do the complex calculation except once at the end.
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    Closed: Re: Design of 45 degree slant polarizer

    It's the same answer
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    Closed: Re: Led project. Led on at nightime.

    Excellent idea to use an LDR + resistor divider to directly feed & bias a bjt which drives the LED. Some careful choices & experiments required to make it work, but yes the component count would go...
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    Closed: Re: Steps for first cut design

    Read. Experiment. Calculate. Do. Read some more. Try and understand what a particular design is capable of and what the limits & constraints are. Experiment again. Run simulations & compare the...
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    Closed: Re: Led project. Led on at nightime.

    A few thoughts on the concept circuit --

    The output of comparators is open-drain, so it requires a pullup. Say 10k.
    Also the output drive will not be enough for the LED, so an additional NPN BJT...
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    Closed: Re: Design of 45 degree slant polarizer

    I believe the answer is no.
    However to be noted is that signal loss is 3 dB (half-power) where a vertical polarised signal is being received by a 45deg slant antenna.
  17. Closed: Re: Audio amplifier on PCB error. Ports of opAmp shorted.Can't find the reason why?

    That's correct, which is why I asked for confirmation about the strange load value. Clearly the application is not pure audio amp but some other purpose which OP has not revealed as yet.
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    Closed: Re: RASPBERRY PI input voltage detection

    Yes you should use voltage dividers for all those other voltages. Level shifters is an overkill.
    Here are some example values you could use. You can always calculate your own.

    153689

    Of course...
  19. Closed: Re: Audio amplifier on PCB error. Ports of opAmp shorted.Can't find the reason why?

    If your load is truly only 0.033 ohms, then you need only 0.033 Vp-p (33mVpp) to get your desired current of 1 Amp p-p
    You can reduce all your voltages etc etc accordingly.

    In fact, here is a...
  20. Closed: Re: Audio amplifier on PCB error. Ports of opAmp shorted.Can't find the reason why?

    A few points come to mind right away --

    1) why such high power supply voltages ? you've got +/- 30 volts.
    2) the feedback for opamp should be taken from before C1, not after.
    3) What are the...
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    Closed: Re: MAX485 ground isolation

    then you are a fool. making stupid mistakes. No one can help you.
  22. Closed: Re: Using 0-10V analog sensor output with rasbery pi

    Isn't it just FUN trying to teach a newbie about ohm's law.. where he is already working with mircocontrollers and what not without a clue ?
    Its just sickening.

    you make a 'sketch' (copied of...
  23. Closed: Re: Do you know the basic specification requirements for optical fiber connection?

    Choose the appropriate fibre optic elements based on selections predicated on your environment to achieve your goals.
    Or read a text book on the topic if this is a theoretical question.

    Newbie...
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    Closed: Re: Basic analog BJT hFE tester

    Very nice. Does it work ?
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    Closed: Re: Even Order Elliptic LPF

    The answer seems to be NO
    So move on with your life. Some things are just the way they are.
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