Whites Surf PI schematic

[joop]

Does the sound change when you turn any of the pots?

[paku]

i got same problem like you!!!
but no one give instruction street to the point
HOW To FIX

[seadoggy]

anyone can Help i finish Surf PI,but i have problem!when i conect to 12 volt battery surf pi producing too low noise(bipping),when i remove NE 5534 sound continue bipppiinng!!what is wrong whit my surf PI.

[Rumcajs]

how many turns of wire and coil resistance which is ideal for surfing pi

What do you think from this word: IDEAL?

the number of turns depends from both: wire diameter and coil diameter.
coil diameter is depends from your application, etc.
if you have required the original surf pi coil data's, please re-read comments fom #1.

[nando.22]

how many turns of wire and coil resistance which is ideal for surfing pi

[medj]

To my knowledge
Present but weak response
The problem you have to wrap the wire
Some programs used the account winding wire
I will raise you some good sites to calculate the winding wire
http://coil32.narod.ru/calculate-on-line-en. html
http://coil32.narod.ru/calc/flat_spiral_coil-en. html
http://www.consultrsr.com/resources/eis/induct.

http://coil32.narod.ru/calc/one_layer-en.html

This program where everything
http://www.4shared.com/rar/7XIqq2aX/medj.html: |

[paku]

i need help i have make surfxx an i was finish the board
but i got problem

http://www.geotech1.com/forums/showthread.php?18655-Surf-PI-Pro/page11

[seadoggy]

hello guys do anyone have working single side PCB for surf pi???if any one have pls post here link.thx alot guys

[david135]

I wondered if the condendador 1000uf faith is for the energy of the coils or to the circuit, and yes it would be good idea to change it to a bank capacitors faith

[medj]

Thank you
I see it's weak response
Change some resistors

[joop]

My problem is little sensitivity

Hi Nando,

The only thing you can do now is check your component values and voltages. Without a scope it is very hard to determine the cause.

[nando.22]

My problem is little sensitivity

[david135]

Hi all, I want to know the function of capacitor 1000uf and if any of you are in search of a project shipwrecks offer myself as a mailbox or some ayuda.saludos.i

[medj]

Is it an easy and powerful circuit tested

[bernte_one]

got my last machine working correctly yesterday
the troubles i had before was a result of experimenting with wrong coil values and wrong offset settings
i prefer isolated litz wire (simple monoloop)
i you should try to make your first settings far away from any metal believe it
turn the offset trimmer so that the machine gets a little bit noisy (threshold and gain to70% delay under 50%)
thats the point i used to start
when detecting you can turn it down to run in silent mode or you release the last 30% percent of power
i´m going to make a video so you can see what i mean

if anyone needs homemade pcb within europe i can help (without drilling and silkscreen) very cheap, but only for forum members

kind regards