Frequency modulator design

[SPOORTHI GANGARAJ]

can i design frequency modulator using colpitt's oscillator??

 

[ALERTLINKS]

Colpitts oscillator - Wikipedia, the free encyclopedia
Colpitts Oscillator Tutorial
**broken link removed**
https://www.sonoma.edu/users/e/eliza/courses/es440_lab/lab08.pdf
https://www.edaboard.com/threads/97289/
https://www.edaboard.com/threads/116167/

 

[erikl]

can i design frequency modulator using colpitt's oscillator??

Sure: just use a varicap diode CVAR instead of the frequency-determining capacitor:

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See e.g. here!

 

[srikanth1555]

i am not sure whether you can generate fm modulator by using colpitts oscillator but surely u can design fm using hartleys oscillator by replacing the capacitor in the tank circuit by a varicap....

 

[SPOORTHI GANGARAJ]

hey can you please tell me about working off this circuit?

 

[fcfusion]

i am not sure whether you can generate fm modulator by using colpitts oscillator but surely u can design fm using hartleys oscillator by replacing the capacitor in the tank circuit by a varicap....

Colpitts and Hartley oscillators are very similar, and both can be adapted as frequency modulators.

hey can you please tell me about working off this circuit?

What do you need to know? Specify please

 

[SPOORTHI GANGARAJ]

Colpitts and Hartley oscillators are very similar, and both can be adapted as frequency modulators.



What do you need to know? Specify please

I want to know Theory

 

[srikanth1555]

hey can you please tell me about working off this circuit?

**broken link removed**





go through section 5.8.2 of this book.....page no 5-29....

 

[erikl]

About this there is so much literature on the web available, including explanations and tutorials.