# I already built a metal detector by using 555 timer IC. My problem is 10mh inductor?

1. The number of wires?

2. The number of turns?

3. The coil diameter?

4. The coil length?

Thank you. I am hoping for your sonnest reply.

Can you give me a details of 10mh inductor?

1. The number of wires?

2. The number of turns?

3. The coil diameter?

4. The coil length?

Thank you. I am hoping for your sonnest reply.

1. The number of wires?

2. The number of turns?

3. The coil diameter?

4. The coil length?

Thank you. I am hoping for your sonnest reply.

http://www.diyaudioandvideo.com/Calculator/Inductor/

I searched for 'inductor calculator' and came up with that; it will figure out exactly what you need - substitute the numbers you know to find out what you need to know.