so i have what it looks like 1mm(measured using a cheap digital caliper) diameter enameled copper. How do I make an inductor out of it? I know I need to make a "loop" but unsure on how big or how many turns.
I searched the net but didn't see anything helpful.
thank you.
I searched the net but didn't see anything helpful.
thank you.
iIRC you can take a 10R 3W carbon resistor and use two layers of windings around it.
I guess you'd need around 1-2uH for which you just take a 3/4 inch (18mm) curtain rod and wind 7-10 turns on it, slip it through and put some glue if you want. The shunt resistor, like mentioned above, may run through the inside of it, simplifying PCB routing.
I recommend finding an equation or online calculator to calculate the inductance of an air core inductor. Then wind the inductor so it has the inductance you desire.
Tom
Tom
According to Farley's link (post#2), winding 7 turns of 1mm wire (which you already have) on a 3/4" former gives 1uH of inductance that is suitable for a Thiele Network. Adjust one or two turns up or down if needed.