Recent content by aimans

  1. aimans

    telephone transmitter again not working??

    if that is the case then i can use a 9V battery to power the transmitter while connected to the phone line, what do you think about this battery thing, will it work?
  2. aimans

    telephone transmitter again not working??

    this means that it cannot be done successfully, not a problem, i will measure the different p.d's around the phone line and post 'em here, and then the circuit can be modified accordingly, is this possible?
  3. aimans

    telephone transmitter again not working??

    hmmmm, that is very interesting, is there a way i can stabilise the voltage using an LM317, or that wont help?
  4. aimans

    telephone transmitter again not working??

    thanks a lot for the circuit, i will surely try it adn let you know, i hope it works as i am not sure whether LM2931 is available here, and then later try the phone transmitter, and i will try to post a better pic as i am at takin pictures i dont know if this is a stupid question or not but...
  5. aimans

    telephone transmitter again not working??

    sorry, the thing is still not working, reversed the pin connections, i dont know what is wrong, please help me, someone, if anyone /? has time i can even post my circuit to someone interesed so that you can help me out when you have time?????????
  6. aimans

    telephone transmitter again not working??

    yeah even i noticed them in the datasheets, i'll reverse the connections and try, but what if it doesnt work again????? :(
  7. aimans

    telephone transmitter again not working??

    yes i made it agian and failed again in this fm transmitter, this time i corrected most of my previuos KNOWN mistakes but nothin on the radio. just cannot figure out why, my friends say i need someone to teach me! this time i replaced Q2(2N3563) with BC547 and the other transistor is the same...
  8. aimans

    cannot download rapidshare files?

    thanks 'esp1' that worked exactly as you said. the problem was that when i clicked on the FREE button Flashget started to downaload it(a 5KB page i guess), so i had to turn it off to get the job done, thanks,
  9. aimans

    cannot download rapidshare files?

    i cannot download the files from the rapidshare site. the files are in the following thread http://www.electronics-lab.com/forum/index.php?topic=10085.msg55612#msg55612 i am totally new to rapidshare and dont have a clue how to use it
  10. aimans

    crystal oscillator transmitter

    but how do i know which particular crystal is oscillating at fundamental mode or not?
  11. aimans

    crystal oscillator transmitter

    the circuits you have linked are really good but i do not think i can construct them. most of the vital parts are not available here, like the FET and ZMV833ATA, and most probably not even the BH1417 ic, so cant i jsut replace the oscillator part of a regular FM transmitter and replace it with...
  12. aimans

    555 LED flasher circuit?

    just that simple, and why did'nt i think of that? that's cause i do not know electronics, thanks
  13. aimans

    crystal oscillator transmitter

    you mean we can even increase the frequency of an oscillator, that's nice. but can't i just use a 27MHz crystal and do not get it in the FM band, because i do not want other people to tune into my frequency,  :-\
  14. aimans

    555 LED flasher circuit?

    does anyone have 555IC led flasher circuits with atleast 2 LEDs? i had one but i guess i lost it.
  15. aimans

    crystal oscillator transmitter

    after having a very unsuccessful time with FM transmitters using "wire" inductors and tunning capacitors, i am turning to crystal oscillators, so can any one tell me whether a crystal oscillator can be used for audio transmission like an FM transmitter? i have 2 crystal oscillators of...
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