New, Coil Interwire Capacitance Calculator.

[chemelec]

I Just Created this Html program.
Hope its useful to some of you.

http://www3.telus.net/chemelec/Calculators/Interwire-Coil-Capacitance-Calc.htm

Take care.....Gary

[bbsailor]

Gary,

This calculator is very good. It presents the same results that I calculated using other more complicated methods that I used in my "Making a Fast PI Mono Coil" article.

Nice Job!!!

bbsailor

[amtech2005]

New, Coil interwire Capacitance Calculator.

Looks Good , But The next question is do you set the frequency of the signal generator at the coil - to its resonant frequency? or set to the transmit frequency of the detector your hooking the coil to ?? I believe it should be set to the detectors output frequency , Unless your just winding your own random coils. Also is this for P.I. or VLF ?? take care Eugene [email protected]

[chemelec]

This is for basically Any Coil.

You Must use a Signal Generator and adjust it so you get a Maximum Peak waveform, showing on the scope.
I put the scope in a Single line mode.
"Not X and Y".
So I get a Single Vertical line. Easier to see this peak reading

Using the circuit I Show, That Frequency is basically the Self Resonance of the coil, With a 1pF parallel Capacitor.

My program than calculates Total Capacitance for the Frequency and Subtracts the 1pF to come up with the actual Internal Capacitance.

So far I have built, tested and compared about a dozen coils and Varified the test results, compared to this calculator.

It works out VERY Close to perfect.

It will definately Save me some time as I properly Document all the PI coils I sell.

Seasons Greetings, Gary
*****************************************

Looks Good , But The next question is do you set the frequency of the signal generator at the coil - to its resonant frequency? or set to the transmit frequency of the detector your hooking the coil to ?? I believe it should be set to the detectors output frequency , Unless your just winding your own random coils. Also is this for P.I. or VLF ?? take care Eugene [email protected]

[Aziz]

chemelec,

very good work. If you have any sources for calculating the inductance and capacitance of any coil arrangement (inductively coupled), so let me know. I have not implemented such a feature yet. Its hardcore physics on electrodynamics, maxwell equations, etc.
Aziz

[chemelec]

There are Too Many Variables to deal with to do that.

There is One on the Internet that deals with some of it.

chemelec,

very good work. If you have any sources for calculating the inductance and capacitance of any coil arrangement (inductively coupled), so let me know. I have not implemented such a feature yet. Its hardcore physics on electrodynamics, maxwell equations, etc.
Aziz

[plboy]

I Just Created this Html program.
Hope its useful to some of you.

http://www3.telus.net/chemelec/Calculators/Interwire-Coil-Capacitance-Calc.htm

Take care.....Gary

thx Chemeles for this information