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The skeleton of the I-inductor is supported by the winding of the copper coil. I-inductance is one of the attributes of an electronic circuit or device.

1) The same type of components can be replaced from the scrap circuit board. 2) First determine the inductance and current value, replace it with an ordinary inductor with a pin, and fix it well.

From the appearance, such as a square or round inductor with a magnetic core, slightly larger volume, can see the core and coil.

The chip inductor is only used in the output end of the low-voltage DC control power supply. Its application is seen in the π shape filter circuit of CLC with the filter capacitor, which can stabilize the output current (inhibit current mutation). Inductance components, consisting of a single coil, some with a magnetic core (large inductance), generally expressed in units of μH and mH, current values ranging from a few milliamps to several hundred milliamps.

Voltage transformer - according to the principle of electromagnetic induction type and capacitance type two categories. According to the purpose, voltage transformers are divided into two categories: measurement and protection.

A: The main functions of the transformer are: ① used to insulate the secondary equipment such as instruments and relays from the main circuit. ② It is used to expand the application range of instruments, electrical appliances and other secondary equipment. Voltage transformer installation: ① pay attention to the secondary side do not short circuit. ② One end of the secondary side must be grounded. ③ Pay attention to the installation of the terminal polarity current transformer: ① Do not open the secondary side. ② One end of the secondary side must be grounded. ③ Pay attention to terminal polarity

Good gas performance, low partial discharge value: in the transformer insulation structure, how many local insulation weaknesses, it will first occur under the action of the electric field discharge, but not immediately the formation of the entire insulation penetration breakdown, it may occur on the surface of the insulator or internal, that is, partial discharge.

The design of switching power transformer is divided into three aspects: reduce the loss of switching transformer as far as possible; Minimize leakage of switching transformer; Try to suppress the audio noise of the switching transformer.

Telecom Transformer products are widely used in cable modem, network card, hub, xDSL broadband communication equipment, switch, optical transceiver, router, embedded system, VoIP and other network communication equipment, data communication equipment, photoelectric transmission equipment, access network equipment, power line Internet equipment, voice equipment, etc

The audio transformer can realize voltage-converter conversion just like the power transformer, and can also realize audio signal coupling. There are four main functions of audio transformer:Output transformer: used in audio equipment and playback equipment, impedance conversion in the circuit.