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  1. foTONICS

    AC to DC converter (using envelope detector)

    bandpass filter?
  2. foTONICS

    circuit design help...

    i agree, you're probably just going beyond the VA of the transformer
  3. foTONICS

    Bicycle Turn Signal Electronics needed.

    The continuity setting on a meter doesn't supply any power to the circuit being tested, it just looks for a short between it's two test points ( + and - ). Turning on a PNP transistor I believe which usually leads to a buzzer of some sort. From the way the ribbon cable looks i think the left...
  4. foTONICS

    i want to learn to code but.....

    I took visual basics .net, and I checked out a self-taught C++ book. At my school they currently teach electronic students in C and Unix (I believe it's called unix, im a semester behind and havent taken it yet) so I guess I could say I know C,C++, unix, .NET (vaguely), and assembly would that...
  5. foTONICS

    i want to learn to code but.....

    the only assembly I know of is on the PIC from the gooligum website. Is there a similar tutorial website that I could use for other micro's? I wouldnt mind being fluent in a couple different languages, it may be the only thing that separates me from the other degrees come graduation time...
  6. foTONICS

    Bicycle Turn Signal Electronics needed.

    would the electric motor cause any rf interference, does it freely spin when not in use?
  7. foTONICS

    i want to learn to code but.....

    I self taught myself assembly so I could learn how to use PIC's. Although it has a steep learning curve, once you learn the layout of the registers and the specific micro's abilities. I feel that assembly on a whole makes you understand the inner workings of a micro WAAAAY better than an...
  8. foTONICS

    FM question

    intelligence frequency and modulating frequency are the same thing. if I had to take a stab at what he meant I would say the teacher wants to know what affect the mf has on the signal to noise ratio at the output
  9. foTONICS

    what kind of job am i qualified?

    im entering my 3rd year of electronics engineering in canada. should i be worried after i graduate in a year? I do have work experience in my field. i currently work for my school dealing with microchips, lab equipment, and repairs. I've had a job as a panel builder for mining/water...
  10. foTONICS

    faulty car blinker relay

    So the relay to my rear right blinker is acting funny. sometimes the lightbulb gets shaken loose (the housing is broken) and instead of the steady blinking that we are all familiar with, ~1-2Hz, I get something somewhere two-three times as fast. if i go back to the trunk and fiddle with it it...
  11. foTONICS

    problem with resonant frequency

    I held the actual antenna, I could be wrong about the 15MHz, might be 1.5MHz. I'm sure it was in the megahertz band though
  12. foTONICS

    LCD with pushbutton

    I agree with both these guys, although Harolds approach would be beneficial if you ever wanted to add options to your program later on
  13. foTONICS

    PIC10F200, MPASM: Pin input, then output

    on a couple variations of the chip the GP0 is multiplexed with the comparator. Try disabling the comparator by loading '00000000' into the CMCON0 register right after you configure your option register and before your main program starts.
  14. foTONICS

    problem with resonant frequency

    On a side note he did mention that he was having a problem with load balancing, but as I recall this should only have a negative inpact on the propagation of RF energy, not its center frequency
  15. foTONICS

    problem with resonant frequency

    Hey all, I work at a school lending out materials and offering advice whenever I can. A student came up to me the other day and was asking about folded dipole antennas. He was constructing a antenna that he built from a schematic in a textbook (This was a few weeks ago so I don't have any...
  16. foTONICS

    FM question

    your referring to narrow band?
  17. foTONICS

    FM question

    I thought FM had a deviation of +- 75kHz
  18. foTONICS

    help in programming long press button

    could you get rid of this by maybe comparing the timer ticks to a value right before the timer roll over then just force a new value into the timer (assuming the new value is larger that the requirment to turn on the led)
  19. foTONICS

    spreading out the PWM on a PIC16F627a

    my project is 6 disks with a pressure sensor on each disk. If there is nothing on the disk it will flash red, if there is a cup on it it will fade in/out blue. if all sensors have weight on them the blue fading will be in sync. I've been trying to work together a system of multiplexing the...
  20. foTONICS

    TLC5940 LED driver

    I'm trying to understand how to write in the values for PWM for this chip. The problem isn't writing in the values, I can get a micro to do that; I just want to know if I'm right at thinking that 0.0 would be 0% for output 0 and 0.11 would be 100%. So is it safe to say that the smoothest...
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