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nst.john
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If I am making my own inductor following the equation:
For AC, the aluminium will have a current induced into it which have its own magnetic field opposing the main one. This will reduce the inductance slightly.nst.john said:Alrighty thanks a lot! That should be a lot of help.
Not sure how to calculate it. Why don't you use a plastic or cardboard former? These materials all have a relative permeability of 1.nst.john said:How much is slightly?
Yes, 40kHz will buy you some hefty core losses. How much of a problem that is will depend on your application. If it plugs into the wall and doesn't get hot you should be fine. If it is human powered... Sweat a little more.nst.john said:True. I'll try that. I'm applying for the Google science fair and need it for tomorrow so this should be good. And my frequency needed is 40kHz so would that still be a problem?
An inductor is an electronic component that stores energy in the form of a magnetic field. It is typically made up of a coil of wire and is used to control the flow of current in a circuit by resisting changes in current.
When current flows through an inductor, it creates a magnetic field around the coil of wire. This magnetic field stores energy, and when the current changes, the magnetic field also changes, leading to a change in the voltage across the inductor. This change in voltage causes the inductor to resist changes in current, which is why it is often referred to as a "resistor" for changing current.
Inductors are commonly used in electronic circuits to filter out unwanted noise or signals, to store energy in power supplies, and to control the current in motors. They are also used in radio frequency circuits to tune frequencies and in electronic filters to remove certain frequencies from a signal.
The unit of measurement for inductance is the Henry (H), named after the scientist who first discovered inductance, Joseph Henry. One Henry is equal to one volt-second per ampere (Vs/A).
Inductors can be tested using a multimeter set to measure resistance. A good inductor will have a low resistance value, typically in the range of a few ohms. Additionally, inductors can also be tested using an oscilloscope to measure the voltage across the inductor when a current is passed through it.