In car FM transmiter

[RubberDucky]

Hya all,
i was thinking about buliding an fm transmitter that connects to the cigarate lighter in the car, can i use a regular fm microphone design?
how do i convert it to use 12v supply? would i still need the antena?
should i worry about the input rating? :?:

 

[audioguru]

can i use a regular fm microphone design?

It depends on whether the transmitter design will do whatever you need.
Maybe it won't have enough RF power.

how do i convert it to use 12v supply?

Purchase or make a voltage reducing circuit. A voltage regulator IC circuit would be easy.

would i still need the antena?

Think about the purpose of the antenna.

should i worry about the input rating?

Supply voltage input? Of course, it might smoke if the supply voltage is too high for the design.
Feeding line level from a CD player or something into a low-level microphone input? What do you think the transmission of a terribly over-driven microphone preamp would sound like on an FM radio? :lol:

 

[RubberDucky]

10x! i'll start with it and post my progress.