Common inductance type identification and detection method | GETWELL

1, inductor is commonly referred to as the inductor, is one of the basic electronic components commonly used.

Inductors are of various types and shapes, the more common ones are: single-layer hollow core winding coil, inter-wound hollow core coil, blow-out hollow core coil, multi-layer hollow core coil, honeycomb type inductor coil, coil with magnetic core coil, magnetic tank coil, high-frequency choke coil, low-frequency choke coil, fixed inductor, etc.

2. Fixed inductor is a series of products with strong universality. The coil (often containing magnetic core) is sealed in the case, which has the characteristics of small volume, light weight, firm structure, stable inductance and convenient installation.

3, another is the color standard method, that is, the color ring to represent the amount of inductance, its unit is H.

1.2 Ring represents two significant digits, the third ring represents multiple multiplier, and the fourth ring represents allowable deviation of SMT shielded power inductor manufacturer.Rated current is the Max current allowed to pass through the inductor during normal operation.In use, the actual operating current of the inductor should be less than the rated current, otherwise the inductor coil will be seriously heated or even burned out.

4, inductors for alternating current is called impedance of resistance, with the symbol "XL", said the unit for Ω.

Inductance is the ratio of the ac voltage (RMS) at both ends of the inductor to the AC current (RMS) passing through the inductor.Inductance XL, respectively, and the frequency of the alternating current (ac) and f the inductor is proportional to the inductance L, namely the XL = 2 л fL (Ω).

5. Inductors can be used to distinguish between high and low frequency signals.

Since the high frequency choke coil L has a high sensitivity to high frequency current and a low sensitivity to audio current, the high frequency signal output by the common mode inductor manufacturer transistor VT collector stage can only enter the detection circuit through C.After detection, the audio signal can reach the earphone through L after amplification by VT.


Post time: Sep-09-2020