How can you understand inductance and capacitance as much as you understand resistance?

If you want to say how to understand the resistance, I can't say...They are only a matter of numbers, and there is one point: for direct current, the resistance and the resistance of the inductor itself are constant, or the resistance of the inductor coil is very small, and the capacitor break resistance is infinite. For alternating current, the resistance of the resistor remains unchanged, and the resistance of the inductor coil is equal to the resistance of the inductor itself plus the inductance that occurs when the inductor is charged and discharged due to the change of voltage or current direction, and the capacitor is short-circuited without resistance.

Resistance, inductance, and capacitance are in the circuit

1) Inductance and capacitor are the same as resistance in the circuit, and the voltage and current relationship between the two ends of the circuit are also in line with Ohm's law, but the resistance value is independent of frequency, while the inductive reactance of inductance and capacitance of capacitance are related to frequency.

For pure resistance: voltage = resistance current.

For pure inductance: voltage = inductive reactance current, where inductive reactance = 2 f l For pure capacitance: voltage = capacitive reactance current, where inductive reactance = 1 2 f c

2) The current flowing through the inductor cannot be abruptly changed, and the phase relationship between voltage and current is that the voltage is ahead of the current.

3) The voltage at both ends of the capacitor cannot be abruptly changed, and the phase relationship between voltage and current is that the voltage lags behind the current.

How do you understand this, do you understand that there are many resistors, is it because the function of resistors is less? You search for the basic role of capacitance and inductance, and then you remember what circuit you encounter, and you can think about it yourself, and you will know that it is not too difficult, but it is difficult to study it deeply, and it is difficult to study it deeply.

1. Inductance symbol: L, unit: h (hunt) Inductance unit: (ohm).

2. Capacitance symbol: c, unit: f (farad) capacitive reaction unit: (ohm).

3. Impedance symbol: z, unit: (ohm).

4. Admittance symbol: Y, unit: S (Ximen eggplant bush).

Definitional: <

However, the magnitude of the capacitance is not determined by q (charged) or U (voltage), i.e. the capacitance is determined by the following formula: c = s 4 kd.

where is a constant, s is the area facing the capacitive plate, d is the distance of the capacitive plate, and k is the electrostatic force constant. Common parallel plate capacitors, the capacitance is c = s d ( is the dielectric constant of the medium between the plates, s is the area of the plates, d is the distance between the plates).

The formula for calculating the potential energy of a capacitor is: e=cu2 2=qu 2=q2 2c

The formula for calculating the parallel connection of multiple capacitors: c=c1+c2+c3+....+cn

The formula for calculating multi-capacitor series in series: 1 c=1 c1+1 c2+....+1/cn

Three capacitors in series: c=(c1*c2*c3) (c1*c2+c2*c3+c1*c3).

Second, the impedance formula.

z= r+i( ωl–1/（ωc）)

Note: The load is a resistor, inductive inductance, capacitive reactance of three types of compounds, after the composite is collectively referred to as "impedance", written as a mathematical formula: impedance Z = r + i ( l 1 ( C)).

where r is the resistance, l is the inductive reactance, and 1 (c) is the capacitive resistance.

1) If (l 1 c) >0, it is called "inductive load";

2) Conversely, selling cherry blossoms if (l 1 c) <0 is called "capacitive load".

The difference is big, the function is different, the nature is different, and the circuit combination is different.

Inductance: The property that can generate electromotive force when the current changes in the circuit is called inductance, and inductance is divided into self-inductance and mutual inductance. (1) Self-feeling:

When an electric current passes through the coil, a magnetic field is generated around the coil. When the current in the coil changes, the magnetic field around it also changes accordingly, and this change in the magnetic field causes the coil itself to induce an electromotive force (the electromotive force is used to represent the terminal voltage of the ideal power supply of the active component), which is called self-inductance. (2) Mutual inductance:

When two inductance coils are close to each other, the change in the magnetic field of one inductance coil will affect the other inductance coil, and this effect is called mutual inductance. The magnitude of the mutual inductance depends on the degree to which the self-inductance of the inductance coil is coupled to the two inductance coils. The use of the characteristics of the inductor should be used to manufacture inductors, the function of isolating and filtering AC signals or forming resonant circuits with capacitors, resistors, etc., to manufacture transformers to isolate or change voltage, and to manufacture motors as the power of equipment.

Capacitors are often referred to simply as capacitors, which are denoted by the letter C. Definition 1: A capacitor, as the name suggests, is a 'container for electricity' and is a device that holds an electric charge.

Product Name: capacitor. Capacitor is one of the electronic components widely used in electronic devices, which are used in DC blocking, coupling, bypass, filtering, tuning loops, energy conversion, control circuits, etc

It is mostly used in DC circuits, and the reason for the introduction of filter capacitors is to obtain a smooth and stable voltage, because the voltage at both ends of the capacitor cannot be abruptly changed, so it can suppress the fluctuation of voltage and make the voltage smooth and smooth. Decoupling: also known as decoupling, it has two main functions:

1. Remove the AC RF coupling between devices. It shorts out momentary spikes and glitches on the power supply of the device. Theoretically, the higher the frequency, the smaller the decoupling capacitance is required.

Bypass: The function of the bypass capacitor is to short-circuit the unwanted AC signal in the loop to ground.

The inductor is the coil and the capacitor is the pole piece.

Hello, about the relationship between electrical resistance, inductance and power capacitance, Bai Zhixu Electronics's experience will explain to you:

The resistor can be used as an electrothermal element, which converts DAO electrical energy into internal energy, which is generated by the resistance of atoms to electrons.

A capacitor is two plates that are not connected and are used to store the electrical charge and release the electric charge, which converts the electrical energy into electric field energy.

The inductor is a spiral coil, which generates a changing magnetic field in the spiroid coil by changing the current, and it has to block the change of the magnetic flux through it, and act as a hindrance (note, not prevent) the conversion of electrical energy into magnetic energy at point six.

The similarities and differences between resistance, inductance, and capacitance are as follows:

Similarities: both have the ability to block the passage of special currents.

The differences are:

1.The resistor consumes power and is an energy-consuming element, and the inductor and capacitor do not consume power and is an energy storage element;

2.In a DC steady-state circuit, the inductor is equivalent to the path and the capacitor is equivalent to the open circuit;

3.In an AC steady-state circuit, the inductor current lags 90° behind the voltage, and the capacitive current is 90° ahead of the voltage.

4.The resistance between the two pole plates of the ideal capacitor is infinite, and the resistance at both ends of the ideal inductor is infinitesimal (0);

5.Capacitors are non-polarized and polarized. Polarized electrolytic capacitors are also divided into ordinary aluminum electrolytic type and noble tantalum electrolytic type;

6.The higher the frequency, the stronger the inductor's ability to block the passage of current, and the weaker the ability of the capacitor to block the passage of current;

7.Resistors are rated in terms of power, inductors are rated in terms of current, and capacitors are rated in terms of voltage.

Resistance: It can conduct direct current and alternating current, and has a certain hindrance effect on both direct current and alternating current.

Capacitance: AC, DC. The higher the frequency of the alternating current, the smaller the obstruction.

Inductance: DC, AC. The higher the frequency of the alternating current, the greater the obstruction.

Resistors are pure energy devices that generate heat and consume energy as current flows through.

The inductance is equivalent to a resistor plus an ideal coil, which can store and release energy.

Capacitance is also equivalent resistance plus ideal capacitance, which is also capacitive.

In addition, the impedance and capacitive reactance of inductors and capacitors are related to the operating frequency.

Inductance, capacitance, and resistance all have an obstructive effect on the current, and the inductance and capacitance have a hindering effect on the current and are related to the frequency, which is called reactance. The sum of resistance and reactance is called impedance.

In circuits, their role is nothing more than impedance, but this explanation is too broad, and the specific role should be known according to the analysis of the circuit diagram, for example, there are more than a dozen uses of capacitors.