The origin of the hollow self-adhesive coils

The origin of the hollow self-adhesive coils ` hollow self-adhesive coils is a device to work using the principle of electromagnetic induction. When a current flows through a wire, there will be some electromagnetic field around theconductor, and the electromagnetic wire and wire of electromagnetic field inthe scope of the induction effect. On the occurrence of electromagnetic wireitself occurs role, called "self", namely the conductor current change theiroccurrence change of magnetic field, the magnetic field is further affected theelectric current in a wire to wire at the other; the electromagnetic scale effect,called "transformer". Hollow self-adhesive coils of electrical characteristics andcapacitor instead, "resistance of high frequency, low pass". The high frequency signal through the inductance coil will encounter great resistance, it is difficult to pass on; and presents the low-frequency signal as it passes bythe resistance is small, i.e., low frequency signal can be easily through it. The inductance coil resistance on DC power is almost zero. Resistance,capacitance and inductance, they regarding the electrical signal in the circuitflow will show some resistance, the resistance of which we call the "impedance"inductance coil presents for current signal is the use of coil inductance. The inductance coil and sometimes we call it "inductor" or "coil", represented by the letter "L". The winding inductance coil, the number of coils wound we call it "the turn number of coil".

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