Ok so I built this simple FM transmitter awhile ago.
Here is it's schematic
http://www.reconnsworld.com/transmit/fm_trasm.gif
I am wondering can I replace the electric mic with the input from a telephone green/red wires. I know that the voltage from these wires are around 50 vdc and the current is pretty low. What would I need to get the phone voltage/current in the green and red wires of the phone down to an reasonable level so I can take out the mic and in place put in the input from the phone wires.
Would an audio transformer 1K to 8 ohm work or something because I have that. I want to keep this simple this shouldn't take alot of circuitary to replace the mic with the input of the phone.
Thanks for any help.
I don't want to create a totally new FM transmitter just want the ability to use the input voice signal of a phone instead of the mic in my transmitter to modulate with.
So don't give me knew schematics for totally different FM transmitters or stuff.
Also I know I would have to take account of the 90vac 20hz ring so as to not damage the transmitter when this occurs.
Thanks for any help
Here is it's schematic
http://www.reconnsworld.com/transmit/fm_trasm.gif
I am wondering can I replace the electric mic with the input from a telephone green/red wires. I know that the voltage from these wires are around 50 vdc and the current is pretty low. What would I need to get the phone voltage/current in the green and red wires of the phone down to an reasonable level so I can take out the mic and in place put in the input from the phone wires.
Would an audio transformer 1K to 8 ohm work or something because I have that. I want to keep this simple this shouldn't take alot of circuitary to replace the mic with the input of the phone.
Thanks for any help.
I don't want to create a totally new FM transmitter just want the ability to use the input voice signal of a phone instead of the mic in my transmitter to modulate with.
So don't give me knew schematics for totally different FM transmitters or stuff.
Also I know I would have to take account of the 90vac 20hz ring so as to not damage the transmitter when this occurs.
Thanks for any help