Search results

  1. M

    Colpitts Crystal Oscillator

    Hey, Just wondering how to choose my L,C,R variables to achieve a desired frequency. Do I just choose any combination that yields X Mhz = 1 / ( 2pi * sqrt(L*Ctotal)) ? What would be a good, practical realization of a Colpitts with a desired output frequency of 100 MHz? I.e, the variable...
  2. M

    Basic Oscillator Question

    Hey Dave, Like I said it's just a project for fun to learn and get some experience. Even if I can't get it to work cleanly, I'll still be better off for taking a shot at it. Anyhow, what if we center it at say, 98 and do a 95/9101 and 91/105? Is it realistic to use the negative image at...
  3. M

    Basic Oscillator Question

    Is this the signal at 99,97,95? If so, I'd like to use those signals too if they're viable. If that's not what you're talking about, pie on my face, don't know what the difference signal is, haha. :eek:
  4. M

    Basic Oscillator Question

    Hey Dave, http://webdocs.cs.ualberta.ca/~schlegel/publications.html Any lack of understanding is on my part, not his.. He's a super busy guy so that's why I'd like to have a pretty good understanding of the project before I ask him about stuff, or else I'd be at the office a few times a...
  5. M

    Basic Oscillator Question

    The professor is world-renowned in the field of communication... Anyways, I understand that it can only produce 1 signal- I am supposed to carry out something like what is drawn in your picture. Does it really matter if there's a bit of noise elsewhere? Assuming I'm tuned into 105,103,101...
  6. M

    Basic Oscillator Question

    Hey guys, maybe I'm not explaining it properly, because my professor said it wouldn't be too hard to do. He said all I have to do is take the signal out, multiply that by a few signals, and put them through an adder. Putting the project as a whole aside though, my problem right now is getting...
  7. M

    Basic Oscillator Question

    Hi Steve, Thanks for the quick reply. Right now I have an FM transmitter that I use for my ipod with a 3.5mm male to male stereo audio cable. I'd like for it to work for voice as well; is that easily done? I want to modify the device so that it transmitts over multiple frequencies as...
  8. M

    Basic Oscillator Question

    Hi, I saw another post about multiple frequency FM transmission but it was a bit different. I'm looking to design a simple circuit modifying a single-frequency FM transmitter to 3-4 different frequencies. Assuming I already have a signal at say, 100MHz, from what I understand I need to...
Top