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Everything posted by aimans

  1. for the second circuit, i replaced 2N3904 with KN2222, and 2N3906 with MPS2907A.
  2. 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 0.75mm thick wire[about 21 gauge], i also tried the capaciter trimmer for my second circuit but i heard nothing on the radio, all the components are exact, except for the transistors which i replaced with ones with similar characteristics. please anyone out there, help me,
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