What are the main parameters for selecting magnetic beads?

小太阳yy

What are the main parameters for selecting magnetic beads? [Copy link]

Is there any expert who can explain it to me?

qwqwqw2088

Impedance, |Z|
DC resistance, DCR
Rated current, Rated Current

qwqwqw2088

When choosing magnetic beads, you should ask the merchant for manual parameters, such as the impedance of the magnetic beads is determined at a certain frequency. You should look at the impedance Z frequency characteristic table or curve, which are all available.

Rated current refers to the maximum current allowed when the magnetic bead is working normally.

DC resistance is the resistance value of the bead when there is current. The smaller the better.

小太阳yy

qwqwqw2088 Posted on 2021-7-15 08:37 When choosing magnetic beads, you should ask the merchant for the manual parameters. For example, the impedance of the magnetic beads is determined at a certain frequency. You should look at the impedance Z frequency characteristic table or curve, all of which are...

Thank you, sir. I'll post a thread to test the activity of our forum. Haha.

chunyang

The main parameters to look at are impedance, frequency response curve and carrying current. Impedance determines the attenuation rate, frequency response curve determines whether it can work at the frequency of the circuit, and current parameters are needless to say. Among them, the frequency response curve is the most important parameter that beginners tend to overlook.