I made a few toroid inductors and i learned that the color coded toroid type (yellow white, yellow green etc.) has relation to frequency. Also a person told me that copper thickness has effect too.
By my tries, if wind same turns in same two toroids with different copper thicknesses they have exactly the same inductance. I do not know about freq. response.
1) Does the copper thickness have any effect on the frequency. If so how?
2)In addition to question 2 should i only consider copper thickness in the case of how many amps the inductor will handle.
3)How the toroid type affecting the frequency. If i have a toroid that has a freq range around 10MHz to 50MHz, can't i use it for filtering my dc power line spikes with LC filter in lower frequencies.