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Type: Posts; User: FvM

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  1. Closed: Re: 16F877A : TMR1L/H, can not load values inside with sprintl

    I don't recognize that interrupts are ever started in the post #1 code.

    Shouldn't main() call the init functions?
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    Closed: Re: Stuck at simulations of Amplifier in LTSpice

    Capacitors are zeroed during initial transient solution, thus a SPICE simulator has no problems with large capacitors, as long as the large signal operation point doesn't differ from the initial...
  3. Closed: Re: Magnet core inductor out of TV set, what is is used for?

    Thanks, a ferrite permanent magnet glued to the top of the drum core, probably a second one at the bottom. I agree, it can be hardly used for anything besides it's original dedication.

    Expect only...
  4. Closed: Re: Magnet core inductor out of TV set, what is is used for?

    The photo in post #7 seems to show a simple coil with ferrite core. Are you sure that it involves a permanent magnet? Due to the open magnetic path, the core has only limited effect on the coil...
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    Closed: Re: Frequency Module IGBT

    I can't imagine many configurations where the switching frequency per module is higher than per transistor, anyway the datasheet specification is surely per transistor. But the number gives only a...
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    Closed: Re: Photodiode SFH205FA in PSpice

    Find photo diode models at https://www.osram.com/os/tools-and-services/downloads/index.jsp

    Basically a Si-diode + a current source to model the irradiation.

    The basic diode without the current...
  7. Closed: Re: Magnet core inductor out of TV set, what is is used for?

    "S" correction choke is a good guess, but there are many different magnetics, particularly in a color TV. It's about 20 years since I did the last CRT TV repair.
  8. Closed: Re: Huge difference between results from schematic simulation and momentum co-simulat

    I believe that you see large differences with the said "extreme" microstrip geometry. Unfortunately I can't locate a comparison of both results in your threads.

    Like Volker, I would trust the EM...
  9. Closed: Re: Magnet core inductor out of TV set, what is is used for?

    Why not show a photo?
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    [SOLVED]Closed: Re: Help for Assembler 12F675

    Sounds self-explanatory to me. It's Proteus.
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    Closed: Re: PWM Ramp Voltage of SG3525

    To calculate the modulator gain, you better refer to the typical rather than marginal threshold values, 0.9 - 3.3V.
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    [PIC]Closed: Re: Question About Crc8 Picbasic Implementation

    The answer was already given: Yes.

    That's how CRC calculation works, you initialize the CRC variable, call the routine for every message byte and have the message CRC.
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    [PIC]Closed: Re: Question About Crc8 Picbasic Implementation

    You need to review the PICBASIC manual. HEX2 means two hex digit formatting.

    In my view, the original question hasn't much to do with CRC algorithm. It's more general how to implement a specific...
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    Closed: Re: Current Density PCB track

    No. Small trace is dissipating most heat by lateral conduction, thus higher specific rating. Large plane must dissipate all heat vertically. By the way, radiation plays a minor role in heat...
  15. Closed: Re: DCDC module recovery from input overvoltage involves a time delay?

    Always a good idea to read the manual completely. Review page 13.
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    [SOLVED]Closed: Re: Device Support for MAX10 FPGA

    A function in device setup

    159629
  17. Closed: Re: Figure out the dimensions for this circuit button for mouse

    I recognize a square tactile switch with two through-hole pins. Important parameters are button height above PCB and pin distance. A popular form factor is 6.5 mm pin distance and 4.3 or 5 mm height....
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    [SOLVED]Closed: Re: Device Support for MAX10 FPGA

    Your question is answered in the MAX10 device overview document, vertical migration paragraph. M02SC324 to M16SC324 are pin compatible. The best way to care for compatibility, also if devices have...
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    [SOLVED]Closed: Re: Device Support for MAX10 FPGA

    I didn't yet pay attention to the fact, that you are referring to an old Quartus version. 17.0 of May 2017 was the first version supporting MAX10. I'm still using Quartus 17.1 of November 2017 for...
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    [PIC]Closed: Re: Question About Crc8 Picbasic Implementation

    The CRC algorithm as functional as such, question is how it's used in the application, if CRC is initialized correctly, how you feed CRC_IN. This can't be seen from your code snippet.
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    Closed: Re: Current Density PCB track

    Hyperlynx has a default current density warning level of 10 mA/mil² (about 1700 A/cm²). An 1 oz, 1mm (40 mils) wide trace carrying 2 A, a still acceptable value according to Saturn etc., has already ...
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    Closed: Re: Upgrading 12v peltier based refrigerator

    Suggest to read this old Melcor application note that gives a good overview of peltier operation. Melcor is now Lairdthermal.com, the classical CP peltier device series is still continued.
    ...
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    Closed: Re: Current Density PCB track

    If you convert the linked current capacity numbers for typical trace widths to current density, you get a first answer.

    - - - Updated - - -

    Acceptable current density values are set by thermal...
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    Closed: Re: De Q'ing resistor purpose

    As the question is posted in PCB Layout rather than RF or Analog Design section, I fear it's really unclear what "De Q'ing" resistor means for you. Please give a typical example.
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    Closed: Re: EMC Threshold range for different circuit

    EMC compliance must be achieved for the final product with typical application wiring (power supply, signal and communication cables). I don't understand what you mean by "have to define dB levels...
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