fm transmitter

473

07:06:58

I didn't tried it but i think this would work. If you build this you can adjust frequency by modifying a bit the 42nh coil like making it a bit longer or shorter.
-nikisalli

published 10 years ago

Marco89Ita

10 years ago

where do i attach the microphone?

nikisalli

10 years ago

In place of the ac source

hurz

10 years ago

But the Mic BJT needs some proper biasing. This way it wont work at 3kHz

Chryseus

10 years ago

As hurz pointed out you need proper biasing to connect a microphone or any other AC signal, 42nH is also very small, it's better to use lower capacitance than inductance due to the higher Q factor of larger inductors (capacitors are naturally high Q regardless of value) and easier construction.

Chryseus

10 years ago

Also this does AM modulation not FM

nikisalli

10 years ago

Sorry it's my first fm trasmitter and i'm 14 so i didn't studied this things at school

20Mhz

10 years ago

nikisalli, it's ok if you don't fully understand, most of us still try to catch up after years of study.... Keep it up, if you can simulate it you can build it, you just need to figure it out the key parts ;)

soheld

9 years ago

Sohel

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