What do the letters and numbers on the capacitor represent?

The number on the capacitor represents the nominal value of the capacitor. The letters represent the numerical value of the capacitor.

In DC circuits, capacitors are equivalent to open circuits. A capacitor is a component that stores electrical charge and is one of the most commonly used electronic components.

The simplest capacitor consists of plates at both ends and an insulating dielectric in the middle.

including air). After the electrode is energized, a voltage (potential difference) is formed, but the entire capacitor is not conductive due to the insulating material in the middle, and this is the premise that the critical voltage (strike voltage) of the capacitor is not exceeded.

Capacitor selection is contraindicated.

Overcurrent (The current exceeds the rated ripple current, and when the ripple current is applied that exceeds the rated value, the capacitor body will overheat, the capacitance will decrease, and the life will be shortened.)

Overvoltage (The leakage current of the capacitor when the voltage applied to the capacitor exceeds the rated voltage.)

will rise, and its electro-oxygen properties will deteriorate until it is damaged in the short term.

When a reverse voltage or AC voltage is applied, when a DC aluminum electrolytic capacitor is connected to the circuit with reverse polarity, the capacitor will cause a short circuit in the electronic circuit, and the resulting current will cause damage to the electrical container. If it is possible to apply a positive voltage to the negative lead in the circuit, a non-polarized capacitor is used.

The above content refers to Encyclopedia - Capacitors.

Today, we will briefly introduce what the letters and numbers on the electric vehicle battery mean.

The letters and numbers on the capacitor represent: the number represents the nominal value of the capacitor, and the letter represents the numerical value of the capacitor. The number on the capacitor represents the nominal value of the capacitor.

The letters represent the numerical value of the capacitor. In DC circuits, capacitors are equivalent to open circuits. A capacitor is a component that stores electrical charge and is one of the most commonly used electronic components.

The simplest capacitor consists of plates at both ends and an insulating dielectric in the middle.

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The role of capacitanceA capacitor is an electronic component that holds and releases an electric charge.

The basic working principle of capacitors is charge and discharge, and of course rectification, oscillation and other functions. In addition, the structure of the capacitor is very simple, mainly composed of two positive and negative electrodes and an insulating medium sandwiched in the middle, so the type of capacitor is mainly determined by the electrode and the insulating medium.

Capacitors are used for many purposes, mainly as follows: DC isolation, which is used to prevent DC from passing through and allowing AC to pass. Bypass decoupling, which provides a low-impedance path for certain components in parallel in an AC circuit.

The capacitance symbol letter indicates that it is a farad。Capacitance is also known as "capacitance", the symbol is denoted by c, and the SI unit is farad (f).

Capacitor introduction

Capacitance refers to the ability to hold an electric charge. Any electrostatic field is made up of many capacitors, and where there is an electrostatic field, there is a capacitance, and the capacitance is described in terms of an electrostatic field. It is generally believed that

An isolated conductor forms a capacitance with infinity, and the conductor is grounded to the infinity and connected to the earth as a whole.

Capacitance is a physical quantity that expresses the ability of a capacitor to hold an electric charge. Capacitance from the physical point of view, it is a static charge storage medium, may be permanent charge, this is its characteristic, it is widely used, it is an indispensable electronic component in the field of electronics and electricity. It is mainly used in power supply filtering, signal filtering, signal coupling, resonance, filtering, compensation, charge and discharge, energy storage, DC isolation and other circuits.

The ratio of the charge q carried by the capacitor to the voltage u between the two poles of the capacitor is called the capacitance of the capacitor. In electrical circuitry, given a potential difference, the ability of a capacitor to store an electric charge, called capacitance, is labeled c. The International System of Units is used, and the unit of capacitance is farad.

Capacitor Symbol: C

The unit of capacitance is farad, abbreviated as "law", and the unit symbol is "f", which is the SI derived unit. Generally speaking, 1 farad is a very large capacitance, and most capacitors used in electronic circuits will have a capacitance of several orders of magnitude smaller than farad, so the commonly used units are smaller "microfarad" (f), which is equal to } farad; and "nanofarad" (nf), which is equal to } farad; and the smaller "picofarad" (pf), which is equal to the } farad.

Capacitors, often referred to as capacitors, 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. Capacitors are one of the electronic components widely used in electronic devices, which are widely used in circuits in terms of DC blocking, coupling, bypass, filtering, tuning loop, energy conversion, control, etc.

Definition 2: A capacitor, any two conductors (including wires) that are insulated from each other and in close proximity to each other form a capacitor.

The meaning of the characters identified on the capacitor:

1. If you see + next to the electrode, it means that this is the positive electrolytic capacitor of the capacitor is polar, and it will explode if it is reversed, if you see the + Y-shaped notch on the aluminum shell directly above the electrolytic capacitor, it is in case the polarity is reversed or overvoltage, and the capacitor bursts, let it explode in this direction first, so as not to explode into a mess.

2. If it is x, y, it means that the capacitance is x capacitance, y capacitance x capacitance refers to the capacitance across the live wire between the neutral line (l n), y capacitance refers to the capacitance across the live wire ground wire or the neutral line ground wire (l g n g), l line, n neutral, g ground, x, y capacitors are safety capacitors.

Safety capacitors are used in such occasions that after the capacitor fails, it will not cause electric shock and will not endanger personal safety.

GJB151 stipulates that the capacity of Y capacitor should not be greater than 0 1UF Y capacitor in addition to the corresponding grid voltage withstand voltage, but also requires this capacitor to have sufficient safety margin in terms of electrical and mechanical properties to avoid the breakdown short circuit phenomenon of sail under extremely harsh environmental conditions, and the voltage resistance of Y capacitor is of great significance to protect personal safety.

The capacitance symbol is c.

The capacitance of a capacitor is numerically equal to the ratio of the amount of charge on one plate to the voltage between the two plates. The basic unit of capacitance of a capacitor is farad (f). In circuit diagrams, the letter C is usually used to denote capacitive components.

The role of capacitors.

1. Coupling: The capacitance used in the coupling circuit is called the coupling capacitor, and the capacitance circuit is widely used in the resistor-capacitance coupling amplifier and other capacitive coupling circuits to play the role of blocking the DC flow and AC.

2. Filtering: The capacitor used in the filter circuit is called the filter capacitor, which is used in the power supply filter and various filter circuits, and the filter capacitor removes the signal in a certain frequency band from the total signal.

3. Decoupling: The capacitor used in the decoupling circuit is called the decoupling capacitor, which is used in the DC voltage supply circuit of the multi-stage amplifier, and the decoupling capacitor eliminates the harmful low-frequency cross-connection between each stage of the amplifier.