What are the commonly used brands of resistor capacitors? The more specific, the better5

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1. The meaning is different.

Capacitor: It is a component that stores electricity and electrical energy.

Resistance: Indicates the magnitude of the conductor's resistance to the current and is a physical quantity.

2. The units are different.

Capacitance: The basic unit of capacitance of a capacitor is the farad (f).

Resistance: The unit of resistance is ohm, referred to as ohm, and the symbol is .

3. The expressions are different.

Capacitance: In circuit diagrams, the letter C is usually used to denote capacitive components.

Resistance: Resistance is a physical quantity that describes the conductivity of a conductor and is denoted by R.

Capacitor A device consisting of electrodes made of two conductors that are close to each other and insulated from each other to store electrical charge and energy. So its thermal resistance (for direct current) is close to infinity and for alternating current is (0). Decoupling, filtering, energy storage.

It is the energy storage element that generates reactive power. General auxiliary circuits obtain stable power supply and reduce interference!

Resistor A two-terminal electronic component made of resistive material, with a certain structural form, which can play a role in restricting the passage of current in a circuit. If the resistance value cannot be changed, it is called a fixed resistor. Those with variable resistance are called potentiometers or variable resistors.

The ideal resistor is linear, i.e., an electrical appliance that restricts the current in a circuit or converts electrical energy into heat, etc., in proportion to the applied instantaneous voltage. Its impedance is resistance is that the thermal-effected device generates active power and converts electrical energy into thermal energy. It's the same for both AC and DC.

It is the main load and connector (wire) in the circuit

Resistance can be used as an electrothermal element, converting 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. As long as the appearance of capacitance and resistance is not damaged, the parameters can be measured directly with a permanent multimeter: capacitance resistance.

The capacitance is AC and DC, the higher the frequency, the smaller the capacitive reactance, and it does not consume energy; The resistance is both AC and DC, the resistance is constant regardless of frequency, and the resistance consumes energy.

<> one. The role of capacitors is as follows:

1. Filtering: filter out the width of the AC component that is not needed in the DC power supply, so that the DC power is smooth;

2. Decoupling: prevent the parasitic oscillation caused by the positive feedback formed by the internal resistance of the power supply;

3. Bypass: avoid the voltage drop attenuation of AC signal components due to resistance;

4. Coupling: DC can be isolated, so that AC signals or pulse signals can pass through, so that the DC working points of the front and rear amplification circuits do not affect each other.

Two. The role of the resistor is as follows:

1. Current limiting: In order to ensure that the current passing through the electrical appliances does not exceed the rated value or the specified value required for actual work, so as to ensure the normal operation of the electrical appliances;

2. Shunt: connect the two ends of the electrical appliances with small rated current into a resistor in parallel, so that the trunk circuit of the circuit can be connected to several electrical appliances with different rated currents at the same time;

3. Voltage division: connect the electrical appliance in series with a resistor with a suitable resistance value, and share part of the voltage to make the electrical appliance work under the rated voltage.

<> one. The role of capacitance is as follows:

1. Filtering: Filtering out direct current.

unwanted AC components in the source to smooth the DC power;

2. Decoupling: prevent parasitic oscillation caused by positive feedback formed by the internal resistance of the power supply;

3. Bypass: avoid the voltage drop attenuation of AC signal components due to resistance;

4. Coupling. The DC can be cut off, so that the AC signal or pulse signal can pass through, so that the DC working points of the front and rear stage Xiaofeng amplification circuit do not affect each other.

Two. The role of the resistor is as follows:

1. Current limiting: In order to ensure that the current passing through the electrical appliances does not exceed the rated value or the specified value required for actual work, so as to ensure the normal operation of the electrical appliances;

2. Shunt: the rated current.

The two ends of the smaller electrical appliances are connected in parallel with a resistor, so that the trunk circuit of the circuit is connected to several electrical appliances with different rated currents at the same time;

3. Voltage division: connect the electrical appliance in series with a resistor of an appropriate resistance value, and share part of the voltage to make the electrical appliance at the rated voltage.

under work.

1. Resistance. The resistor is represented by "R" plus a number in the circuit, and the main functions of the resistor in the circuit are shunt, current limiting, voltage division, biasing, filtering (used in combination with capacitors) and impedance matching.

2. Capacitance. Capacitors are one of the electronic components widely used in electronic devices, which are widely used in DC blocking, coupling, bypass, filtering, tuning loops, energy conversion, control circuits, etc. C is used to denote the classification of capacitance, capacitors.

1. According to the structure, it is divided into three categories: fixed capacitors, variable capacitors and trimmer capacitors.

2. According to the classification of electrolyte, there are: organic dielectric capacitors, inorganic dielectric capacitors, electrolytic capacitors and air media.

quality capacitors, etc.

3. According to the use, it is divided into: high-frequency bypass, low-frequency bypass, filtering, car silver game tuning, high-frequency coupling, low-frequency coupling, and small.

Stroke rate container.

4. High-frequency bypass: ceramic capacitors, mica capacitors, glass film capacitors, polyester capacitors, glass glaze capacitors.

Utensil. 5. Low-frequency bypass: paper dielectric capacitors, ceramic capacitors, aluminum electrolytic capacitors, polyester capacitors.

6. Filtering: aluminum electrolytic capacitors, paper closed pin dicapacitors, composite paper dielectric capacitors, liquid tantalum capacitors.

7. Tuning: ceramic capacitors, mica capacitors, glass film capacitors, polystyrene capacitors.

8. High-frequency coupling: ceramic capacitors, mica capacitors, polystyrene capacitors.

9. Low coupling: paper dielectric capacitors, ceramic capacitors, aluminum electrolytic capacitors, polyester capacitors, solid tantalum capacitors.

Utensil. 10. Small capacitors: metallized paper dielectric capacitors, ceramic capacitors, aluminum electrolytic capacitors, polystyrene capacitors, solid tantalum capacitors, glass glaze capacitors, metallized polyester capacitors, polypropylene capacitors, mica capacitors.

A capacitor is a container that can hold electricity, like a cup of water. Therefore, the capacitor is capable of charging and discharging, and the magnitude of the charge-discharge action determines the capacity of the capacitor. There are many types of capacitors, the most common ones are electrolytic capacitors (large capacitance, positive and negative electrodes), ceramic capacitors (small capacitance, no positive and negative electrodes, poor temperature characteristics), polyester capacitors (polyester film capacitors, small capacity, good temperature characteristics), etc.

The main parameter of ceramic capacitors is capacitance, and ceramic capacitors with high voltage resistance for special purposes will be marked with withstand voltage. The use of ceramic capacitors does not need to be divided into positive and negative poles, and the two ends can be used arbitrarily. Ceramic capacitors are generally suitable to work at high frequencies.

Resistance is an obstacle to the current current.

A capacitor is an energy storage element, just like a reservoir, it can be used to store water when there is water and release water when there is no water; A capacitor is similar to its function, except that a capacitor stores electrical energy. The resistor is just an energy-dissipating component, which is the essential difference between the two.

Capacitor isolation, direct flow, AC resistance, voltage division, energy dissipation.

When direct current: the resistor only consumes the voltage and can conduct electricity, while the capacitor is open and cannot conduct electricity, after the power is turned on, the point capacitance becomes a small voltage power supply, which can be discharged instantaneously, at this moment, the voltage is very large.

In the case of alternating current, the resistance is still the same, and the capacitor can be energized, because the direction or magnitude of the alternating current is always changing, and then the capacitor will be charged and discharged at no point, resulting in a current in the circuit, but there is a frequency problem, the capacitor is through the high frequency resistance and low frequency (note that it is an obstruction rather than a block, and the obstruction will make the current decrease and not disappear).

The role of electrolytic capacitors in electrical circuits.

1. Filtering, in the power supply circuit, the rectifier circuit turns the AC into pulsating DC, and after the rectifier circuit, a larger capacity electrolytic capacitor is accessed, and its charging and discharging characteristics are used to make the fluctuating DC voltage after rectification become a relatively stable DC voltage. In practice, in order to prevent the power supply voltage of each part of the circuit from changing due to the change of load, the output end of the power supply and the power input end of the load are generally connected with dozens to hundreds of microfarads of electrolytic capacitors Because the large-capacity electrolytic capacitor generally has a certain inductance, it can not be effectively filtered out of high-frequency and pulse interference signals, so a capacitor with a capacity is connected in parallel at both ends to filter out high-frequency and pulse interference

2. Coupling: In the process of transmission and amplification of low-frequency signals, in order to prevent the static working points of the front and rear two-stage circuits from influencing each other, capacitor coupling is often used In order to prevent the loss of low-frequency components in the signal from being too large, electrolytic capacitors with large capacitance are generally used.

The function of the resistor is to divide the voltage and limit the current, and it may be called different at different positions in different circuits......

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The current can pass through a resistor but not through a capacitor are two completely different concepts.

What are the differences you are talking about.