Inductance coil in the circuit is generally shown in the following aspects:

1. The purpose of the patch coil: widely used in common mode filters, multi-frequency transformers, impedance transformers, balanced and unbalanced conversion transformers, EMI noise suppression electronic equipment, personal computers and peripheral equipment USB lines, LCD panels, low-voltage differential signal, remote control keys for cars, etc.

2. Fixed-inductance coil winding machine includes: ring coil, choke coil, common mode coil, ferrite magnetic beads, power inductor, with patch type and lead type for choice.

Widely used in the network, telecommunications, computers, AC power supply and peripheral equipment.

3. Closed magnetic circuit high current surface mount power inductor features and uses:

Ideal DC - DC conversion inductance, high power, high saturation inductors, small DC resistance, suitable for high current, belt or and reel packaging for automatic surface installation, applied to the video electrical source supply, video electrical source supply, LCD TV, laptops, office automation equipment, mobile communication equipments, DC/DC converters, etc.

4. The purpose of RF inductor:

Widely used in mobile phones, VCO, TCXO circuit, global positioning system and radio frequency transceiver module, wireless networks, bluetooth module and communication equipment, LCD TV, cameras, laptops, inkjet printers, photocopiers, display monitor, game consoles, color TV, video machines, we, cameras, digital cameras, automobile electronic products, etc.