coilless FM transmitter circuit diagram

Posted on Feb 6, 2014

The RF oscillator using the inverter N2 and 10. 7Mhz ceramic filter is driving the parallel combination of N4 to N6 through N3. Since these inverters are in parallel the output impedance will be low so that it can directly drive an aerial of 1/4th wavelength. Since the output of N4-N6 is square wave there will be a lot of harmonics in it. The 9th ha

coilless FM transmitter circuit diagram
Click here to download the full size of the above Circuit.

rmonics of 10. 7Mhz (96. 3Mhz) will hence be at the center of the FM band. N1 is working as an audio amplifier. The audio signals from the microphone are amplified and fed to the varycap diode. The signal varies the capacitance of the varycap and hence varies the oscillator frequency which produce Frequency Modulation. Disclaimer: All the information present on this site are for personal use only. No commercial use is permitted without the prior permission from authors of this website. All content on this site is provided as is and without any guarantee on any kind, implied or otherwise. We cannot be held responsible for any errors, omissions, or damages arising out of use of information available on this web site. The content in this site may contain COPYRIGHTED information and should not be reproduced in any way without prior permission from the authors.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    Narrow band FM demodulator
    Pulse Generator With Variable Duty Cycle Circuit
    Expandable Graphic Equaliser
    fm radio circuit
    LM741 Light Dark Sensor
    DC supply voltage the more limited indication circuit
    Application of the constant current source circuit by the W7805
    KL-25 type automatic thyristor excitation device circuit