Inductance is the physical quantity that measures coil to generate electromagnetism induction capacity. Connect electric current to a coil, magnetic field can produce all round coil, coil has flux to pass. The power supply that connects coil is larger, magnetic field is stronger, the flux that passes coil is bigger. The experiment proves, the flux that passes coil and the electric current that connect become direct ratio, their ratio is called from feeling coefficient, also be called inductance.  

 

Resistor is the physical quantity that describes performance of conductor electric conduction, express with R. Resistor by conductor the voltage U of two ends and the specific value that carry the voltaic I of conductor are defined, namely R=U/I. So, when conductor the voltage of two end times, resistor heals big, the electricity that carry heals small; conversely, resistor heals small, the electricity that carry heals big.

 

Capacitance, the electron that be accommodated namely and releases charge yuan parts of an apparatus. The main job principle of capacitance charges namely discharge, still have the effect of rectification, oscillation and other of course. The structure of capacitance is very additionally simple, main by two negative electrode and the insulation medium composition that place an inter, so capacitance type basically is decided by electrode and insulation medium.

 

Resistor utility: Block up electric current is passed, can rise to remove cent pressing, step-down, current limliting, laden, billabong, area to deserve to wait for action in circuit; Capacitance action depends on can having the effect such as filter wave, coupling, bypass, tuning and energy changeover in circuit; The action of inductance basically depends on there is a dc, block communication in circuit, know the effect with low frequency, high frequency block.

 

Actually inductance, resistor is mixed capacitance component capacitance, producing effect together through complex combination in electric equipment, use the character between these 3 component, mutual complement makes complex circuit. Among them the resistor of inductance and frequency are concerned, so commonly used in the circuit that concerns with frequency, it is OK to have aircrew adds up to it strengthen the electric current of specific frequency or abate.

 

Cite the case in a real life, the power source that we see via regular meeting is unplugging after next outlet, the diode above still can shine a little while again continuously, is this why? Because the capacitance inside stored beforehand,actually this is electric energy, release next. Of course this capacitance is to use as originally of filter wave. As to wave of filter of so called capacitance, do not know you to listen to the experience that listens with rectification power source, the filter wave capacitance that inferior power source stems from managing cost to considered to use very small size as a result of manufacturer, can have inside earphone buzz appears.

 

Can be in at this moment two end bring power supply on one relatively of high capacity electroanalysis capacitance (1500μF, notice positive electrode receives positive electrode) , can improve acoustic result commonly. Have a fever high sound of the friendly HiFi that make, the capacitor that said less to be able to use above of at least 10 thousand small way comes filter wave, filter wave electric capacity is larger, the voltage weaveform of output is close to dc more, and of capacitance store can action, make when sudden big signal comes, circuit has enough energy changeover to be driving and strong frequency output. At this moment, the action of large electric capacity resembles reservoir a bit, make billowy before flow smooth ground output, can assure to use the supply when water in great quantities downstream.

 

Inductor inductor is can electric energy translate into magnetism can and the component that memory rises. The structure of inductor is similar to transformer, but have a winding only. Inductor has certain inductance, it prevents voltaic change only. If be passed without electric current in inductor, criterion it prevents electric current to had shed it; If electric current has shed it, criterion when circuit disconnects, it will try holding current is constant. Inductor says to clutch again stream implement, reactor, dynamic reactor. Basic introduction inductor circles all sorts of coil that make to call inductance with insulation lead. Circle into with lead circle or circle more the electronic component that measures with arising to feel oneself certainly, often call inductance coil or abbreviation coil.