Perhaps you know switch power source, also understand switch power source to string together modular choke, in all modular choke, but how to know to modular choke is strung together in select switch power source certainly, in all modular choke? So, the article teachs you how to choose namely.

 

The inductor that switch power source uses basically has: The choke that string together a model, in all modular choke, store can inductance, filter wave inductance, magnetism bead.

 

The choke that string together a model chooses a method:

 

1, the choke that string together a model is circled normally make go up in ferrite magnetism annulus or solenoid, to stringing together a model interference presents very tall impedance

 

2, the choke stringing together a model that is like 1mH, when working frequency is 1MHz the impedance that string together a model reachs peak value

 

3, those who use the choke stringing together a model of monolayer winding is v/LIT all over the ground a capacitance lowest. Its resonance frequency is highest also

 

4, quantity of the inductance that string together a model can be chosen inside the limits of 100uH-5mH

 

In all modular choke chooses a method:

 

1, in all the coupling inductance that modular choke includes two mutual semmetry, be about to two independent winding are circled make in same on an annular magnetism core or core of framework form magnetism

 

2, because winding is circled along same way,make identical v/LIT all over the ground number, the flux of the signal stringing together a model that introduces from electrified wire netting accordingly is offsetted completely in magnetism core. And in all the flux of modular signal is strengthened each other, right in all modular signal interference presents very big inductance, those who make is not easy through

 

3, in all modular inductance takes 8-33mH normally