Recent content by xez

  1. X

    Electrical engineer, most introvert job?

    As for introvert, there's always doing sewer electronics for things like flow measurement, anti-corrosion, etc. Lots of field work, and you'll be left WELL alone by your colleagues, the public, your spouse, your dog, ...
  2. X

    Electrical engineer, most introvert job?

    "analyses and calculations" eh? Well there's a whole LOAD of EE jobs where you might need to spend a LOT of time doing bureaucratic / regulatory oriented analyses and calculations e.g. medical devices that need FDA or other kinds of approvals, avionics where you have to go through a lot...
  3. X

    How to Evaluate Multiple Access Interference in Time-Hopping PPM Systems?

    At least those, though often it's necessary to look at other aspects of things like the signal crosscorrelations, the protocol retry algorithms / protocol timings / packet or transmission burst lengths, FEC coding, probability of simultaneous transmissions, etc. etc. Basically it...
  4. X

    EMI Shielding Gaskets: Function & Applications

    The main function is to reduce electromagnetic radiation noise from electronics causing undesirably high electromagnetic noise levels outside of the equipment chassis. Of course it also works in reverse and keeps some of the noise from outside from entering the chassis, but usually...
  5. X

    Designing Synchronous Counters - Up & Down Counting

    Maybe you should look back to more abstract state machine theory. You clearly understand the evolution of states needed for each counter. There is no unique 'design' for a counter to perform any of those actions, though. The best design just depends on what tools you have to work with...
  6. X

    Induced charge in coil from other static coils?

    BTW in a generator or motor any pole pieces that aren't pretty close to DIRECTLY being next to each other have essentially insignificant mutual coupling. The motor/generator doesn't benefit from or use the effect of there being an arc sequence of progressive coils / fields that have some...
  7. X

    Induced charge in coil from other static coils?

    You're welcome. What is the effect you're trying to achieve? I don't think that there's anything about such a physical arrangement that would be particularly useful to construct in and of itself. If you're just trying to couple electrical energy from one coil to another you don't need...
  8. X

    Factors affecting signal strength.

    "field intensity meter will measure in terms of V/m, right? Thank you so much." Yes, if it's a field strength meter, overall the instrument will be able to give you a V/m reading through whatever process of use its manual specifies. "well, what are the factors that affect the signal...
  9. X

    Induced charge in coil from other static coils?

    It'd depend on what you did to energize the peripheral coils. There'd be very little magnetic coupling between the central coil and peripheral coils 1,2,6,7. There'd be significantly weaker coupling between the central one and 3,5. Assuming 4 and the central coil are tightly...
  10. X

    Factors affecting signal strength.

    Well the technical UNIT is V/m, but what you'll actually MEASURE at the output of a receiving antenna is either volts, amps, or power. The predetermined geometry and sensitivity specification of the calibrated receiving antenna is then related to its measured output signal and thus one...
  11. X

    Can I connect a D/A converter to RS232 for a 0-5V output?

    ATMEL says the AT89C52 is not recommended for new designs, and suggests the AT89S52 instead. The AT89S52 doesn't look like it has both a SPI port (I didn't see one at all) and a UART, so it doesn't seem suitable. Anyway what's wrong with the development kit I mentioned before? It is...
  12. X

    Solenoid Electromagnet with strong core, low residual magnetism

    You're quite welcome; good luck! Just keep in mind that when you work with strong rare Earth magnets, you must assume that you're going to have zero physical control of them anywhere within a couple of inches of a ferromagnetic substance or another magnet. They're ceramic, so they will...
  13. X

    Can the Vortex86 Board Handle a 5V @ 20A Power Supply?

    You can use any current *RATING* of power supply that EXCEEDS the sum of the current *RATING* of all connected loads. You sometimes have to check a power supply's MINIMUM rated load necessary for it to function and regulate smoothly and properly, but if it's a 5V only PSU connected to...
  14. X

    Solenoid Electromagnet with strong core, low residual magnetism

    Since your thread has a small diameter, you'll want to use a magnet (or pole piece) that is sufficiently small or geometrically tapered / pointed in height so that the field is very highly spatially non-uniform in the vicinity of the thread and pole piece; that way the attraction force will...
  15. X

    Solenoid Electromagnet with strong core, low residual magnetism

    You can get Nd magnets off the shelf; peruse the inventory of these places and you'll generally find several available varieties: http://www.sciplus.com/category.cfm?subsection=11&category=117 http://www.goldmine-elec-products.com/products.asp?dept=1100...
Back
Top