FM modulator using NE566

Hello guest,

Whenever I have made a circuit and it doesn't work, it is almost always either a bad connection somewhere or a mistake I made in the wiring.

I suggest (in this order):

1. Go over the circuit visually, making sure that the wiring you did is the same as the shematic. Fix anything that may be off and retry.
2. Point test the circuit for anticipated voltages starting with the power supply and then at various points in the circuit.

Best of luck.

Mike

Hello Mike,

Thank you for your valuable comment. did u use the circuit which was in d 5th page of datasheet of ne566 if so can u tell me the values of the R1, C1 and C2 u used. If not can u send me the circuit u used to my mail id r.raghu88@gmail.com

Thank you.

Guest (please register so we can know your name),

What frequency are you trying to get out of the NE566? The values of R1 and C1 are a function of the desired output frequency. The value of C2 is a function of the modulation input frequency.

Tom

Hello Tom,

Thank You! I have registered!

I didn't get output in that circuit! Is their any other circuit of FM modulator using NE566