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  1. 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
  2. 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.
  3. 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...
  4. aimans

    telephone transmitter again not working??

    made this fm telephone transmitter and it doesnt work. :'( cant pick-up anyhtin on the radio, can anyone explain to  me why? ??? replaced Q1 with BC547, and Q2 with KN2222, rest all components unchanged.
  5. aimans

    IC replacment for transistor tester

    what is a good replacement[if at all] for IC 4027 for the transistor tester on this site?
  6. aimans

    transformer getting too hot.

    i was using a 1500mA, 12V transformer to find the resonance frequency of a copper wire. but the transformer was getting hot too quickly, within 15mins of its running it was too hot to touch. is it because the circuit was short circuited by directly connecting to the copper wire with nothing...
  7. aimans

    Urgent help for a transmitter

    i m tryin to construct a telephone fm transmitter which connects to the phone line in series. i have used two schematics from the internet but both fail to work, i dont know what is the problem. all the soldeing and circuiting is fine. but is it because of the inductor wire? cause i am using a...
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