Detection of inductors

There are many types of inductors, and the classification standards are also different. Usually classified into fixed inductors, variable inductors, and fine tuned inductors based on changes in inductance; According to the different media inside the inductor coil, it can be divided into hollow inductors, iron core inductors, magnetic core inductors, copper core inductors, etc; According to the winding characteristics, it can be divided into single-layer inductors, multi-layer inductors, honeycomb inductors, etc. The common shapes and graphic symbols of some inductors are shown in Figure 2-18.

2. Model naming of inductors Part 1: Main name, using the letter L to represent the inductor coil and ZL to represent the resistor coil.  diode

Part 2: Features, represented by the letter G for high frequency.

Part Three: Structural Form, represented by letters.

Part 4: Distinguish codes and represent them with numbers. LGX represents a small high-frequency inductor coil, and LG1 represents a horizontal high-frequency inductor coil.

3. Main technical parameters and identification methods (1) Inductance L. The inductance L of a coil, also known as self inductance coefficient or self inductance, is a physical quantity that represents the ability of the coil to generate self inductance. Its units are henries (H), millihenries (mH), and microhenries (? H).  diode

(2) Quality factor Q. The quality factor of a coil, also known as the quality factor, is a physical quantity that represents the quality of the coil. It refers to the ratio of the inductance (∞ L) and equivalent loss resistance R exhibited by a coil operating at a certain frequency and AC voltage. When the frequency of the device is low, it can be considered that R is equal to the DC resistance of the coil; When the frequency is high, R is the total equivalent resistance including various losses.   diode