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Type: Posts; User: barry

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    Closed: Re: No Signal LG 22LG3000 TV

    what is this connected to? cable box? antenna? Is your cable box/antenna working? Does this work with a DVD player? Chromecast?
  2. Closed: Re: Designing a current source for an unknown load

    Boy, I REALLY don't like the idea of having 200 volts tied to my body. Even if your low-side current source is off, there may be a path for current to flow. Through me.
  3. Closed: Re: Combining 2 power amplifiers in different frequencies to widen bandwidth

    Just because the range is 60-75GHz doesn't mean there's no output at 76GHz. Paralleling the outputs just sounds like a bad idea to me. Distortion at the very least; damaged components more likely.
    ...
  4. Closed: Re: Designing a current source for an unknown load

    Apparently not. The most current you can get with 1 megohm and 200 volts is 200 microamps. I don't care if it's high side or low side.
  5. Closed: Re: Designing a current source for an unknown load

    I think your math is off. If you want 50mA through one megohm you need 50000 volts. Please don’t connect this device to living things.
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    Closed: Re: Test a TVS diode in a circuit

    Not sure what you mean by “ first diode”. These are back-to-back diodes. They should measure OL in both directions, unless you’ve exceeded the zener voltage, which is not likely. Of course, you’re...
  7. Closed: Re: SMPS selection for Big 6-Digit 7-SEGMENTS display as driver

    Nobody said anything about multiplexing...
  8. Closed: Re: Display lcd text from Fpga1 to Fpga2 via USB cable

    Ok, so that Cypress part will make it easier, but still not "easy". First, you're going to need to understand the Cypress chip's function (I don't have time for that). Once you understand that,...
  9. Closed: Re: Output

    I don’t understand why you would INTENTIONALLY assign ‘don’t care’’, or why it would ‘simplify logic’. I don’t even think that’s syntesizable (I’ve never tried it). Why don’t you just have a default...
  10. Closed: Re: Display lcd text from Fpga1 to Fpga2 via USB cable

    First of all, USB is most certainly not a task for a beginner. What kind of support does that board provide for USB? What kind of “guidance” do you want? Do you want us to tell you how to design a...
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    Closed: Re: How would i decrease the clock frequency

    How about some context? FPGA? Microprocessor? Basically, you need to divide your signal by 5000.
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    Closed: Re: Import chipscopes data to matlab

    The question was “how to import into matlab”. You answered a totally different question.
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    Closed: Re: pulse width stretching

    Use flip flop(s).
  14. Closed: Re: SMPS selection for Big 6-Digit 7-SEGMENTS display as driver

    1) Do you really want to drive these at their maximum current rating? Don't you want SOME margin? If you design this for 13.5V drop, and the actual drop is 12V, you're going to overcurrent the LEDs....
  15. Closed: Re: SMPS selection for Big 6-Digit 7-SEGMENTS display as driver

    Without knowing more about your devices, I suspect you need to provide current limiting resistors (LEDs are current devices). You will have to size your resistors based on what supply voltage you...
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    Closed: Re: Import chipscopes data to matlab

    You could just write the script in MATLAB; why bother bringing another tool into the mess? Just use fopen and fgetl to read each line. You'll have to parse the line depending on your data. For your...
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    Closed: Re: Import chipscopes data to matlab

    You could have just looked this up yourself, but use hex2dec
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    Closed: Re: Not enough IOB of a certain FPGA

    There’s 128 outputs.
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    Closed: Re: Vivado Timing Constraint

    At the risk of stating the obvious : It’s a timing constraint. In Vivado. It tells the tools how fast the FPGA has to run. As far as I know there’s nothing explicitly called a “Vivado timing...
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    Closed: Re: Not enough IOB of a certain FPGA

    Um, maybe pick an FPGA that has at least 512 IOB?
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    Closed: Re: pulse width stretching

    Are you designing a chip? That would have helped if you mentioned it 50 posts ago.
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    Closed: Re: pulse width stretching

    Cant you use a spice model?
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    Closed: Re: pulse width stretching

    Isn't a Schmitt trigger AND gate a digital gate?
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    Closed: Re: pulse width stretching

    I still dont know what you mean by "realizing". What is your simulator?
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    Closed: Re: pulse width stretching

    I'm not sure what you're asking.
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