Great coil for original Surfmaster Pi by Whites

[betobrambi]

Hello friendly mine, still itself experimenting with coils…
I have decided to create a great coil for my Original Surfmaster PI of Whites…
I want to do a coil of 600 mm and one of 1 x 1 meters, but I have a problem…
When measuring the Ohms… The original coil throws 1,5 ohms…
I am using cable 0,5 mm (23) and 1 mm (16) acquires enameling or magneto.
I made a coil of 40 40 xs cms with himself obtain 1,4 ohms with cable 0,5 mm with 11 returns… but it does not improve the yield…
The signal is erratic… detects a copper lamina of 30x20 cms to 90 cms of height…
They could help me?
How many returns I must have for coil of 60 60 xs cms. with cable 0,5 mm (23) and coil 1 x 1 meters with cable 1,0 mm (16)?
Finally, how I can increase the voltage for the coil? It is that it throws 0,5 volts to me of Very poor exit… considering that other PI send more voltage to the coil to have more force.
They excuse my bad English…
I hope that they can help me.
Friendly thanks mine.
Best regards
Heriberto

[porkluvr]

... still itself experimenting with coils…
I have decided to create a great coil for my Original Surfmaster PI of Whites…
I want to do a coil of 600 mm and one of 1 x 1 meters, but I have a problem…
When measuring the Ohms… The original coil throws 1,5 ohms…
I am using cable 0,5 mm (23) and 1 mm (16) acquires enameling or magneto.
I made a coil of 40 40 xs cms with himself obtain 1,4 ohms with cable 0,5 mm with 11 returns… but it does not improve the yield…
The signal is erratic… detects a copper lamina of 30x20 cms to 90 cms of height…
They could help me?
How many returns I must have for coil of 60 60 xs cms. with cable 0,5 mm (23) and coil 1 x 1 meters with cable 1,0 mm (16)?

The Surfmaster PI is not really designed to use large coils. It works better with "medium size" coils, for finding coin size objects and jewelry. Large coils are better at for finding larger objects deeply buried, using a more powerful transmitter.

Surfmaster PI is not particularly powerful and for that reason is not really suitable for square-meter coils. You would loose sensitivity on small objects, and without the power, you do not have much depth, so where is the advantage?

Finally, how I can increase the voltage for the coil? It is that it throws 0,5 volts to me of Very poor exit… considering that other PI send more voltage to the coil to have more force.

You should search these forums for Surfmaster, or Surf PI, PI1000, etc., and read everything you can before you attempt to modify your machine.

Do you have a coil calculator program? Do you possess an LCR meter? If the answers are no, you need to acquire some tools (and do some more reading) before you can expect to build decent coils.