What is the difference between strong and weak electricity, and the difference between strong and we

Electronics are divided into two parts: strong electricity (electricity) and weak electricity (information). The two are both related and different, generally speaking, the processing object of strong electricity is energy (electricity), which is characterized by high voltage, high current, high power, low frequency, the main consideration is to reduce loss and improve efficiency, the processing object of weak current is mainly information, that is, the transmission and control of information, which is characterized by low voltage, small current, small power, high frequency, and the main consideration is the effect of information transmission, such as the fidelity, speed, breadth, and reliability of information transmission. Generally speaking, weak current engineering includes television engineering, communication engineering, fire engineering, security engineering, imaging engineering, etc., as well as integrated wiring engineering for the above projects.

Weak electricity is for strong electricity. Strong current = (380 220), high voltage does not matter.

Strong and weak currents are distinguished by the high and low voltages: 380V, 220V, 110V and higher voltages should all be attributed to strong current; Weak current generally refers to the voltage below 64V. This distinction in name is not given in writing, but is simply called out by power practitioners for the sake of a simple distinction in work!

The most basic difference is that strong electricity will electrocute people, and weak electricity will not ,,,.

Strong electricity is high voltage electricity, and weak point is low voltage electricity.

I think it's good to "fly off and baa", and I would like to add: the current strong current (electricity) network can also transmit information, and China is currently carrying out network tests.

The main difference between strong and weak electricity is the difference in use. Strong electricity is used as a power energy source, and weak electricity is used for information transmission. Specifically, they are roughly as follows:

1) The frequency of communication is different.

The frequency of strong electricity is generally 50Hz (Hertz), called "power frequency", which means the frequency of industrial electricity: the frequency of weak electricity is often high frequency or ultra-high frequency, measured in khz (kilohertz) and MHz (megahertz).

2) The transmission mode is different.

Strong electricity is transmitted by transmission lines, and weak current is transmitted by wired and wireless. Radios transmit electromagnetic waves.

3) The power, voltage and current are different.

The strong current power is measured in KW (kilowatts), MW (megawatts), the voltage is measured in V (volts), kV (kilovolts), and the current is measured in A (amps) and KA (kiloamperes); The weak current power is measured in W (watts) and MW (milliwatts), the voltage is measured in V (volts) and MV (millivolts), and the current is measured in MA (milliamperes) and UA (microamps), so its circuits can be composed of printed circuits or integrated circuits.

Of course, there are also high-frequency (hundreds of kHz) and medium-frequency devices in strong electricity, but the voltage is higher and the current is also larger. For example, flashlights and electric shavers are still strong electricity even though the voltage is very low, and the power and current are very small. Due to the development of modern technology, weak current has penetrated into the field of strong electricity, such as power electronic devices, wireless remote control, etc., but these can only be counted as the weak current control part of strong electricity, which is still different from the controlled strong current.

When installing the circuit, you need to figure out its strong and weak current. What is the difference between strong and weak electricity? PChouse will take you to find out.

1. The AC frequency is different, if it is a weak current, the AC no frequency is generally about 20 Hz, while the frequency of strong electricity can reach 50 Hz, which is used in industry.

2. The transmission method is also different, if it is a strong electricity, it is generally said to be transmitted with wires, and the transmission of weak electricity is divided into wired and wireless. If the radio is chosen, it is transmitted by electromagnetic waves.

3) The power, voltage and current are different. Strong electrical power, usually based on kW (kilowatts) and MW (megawatts); The voltage is measured according to V (volts) and kV (kilovolts); The current is measured in terms of A (A) and Ka (kiloampere). Weak current power, based on W (watts) and MW (milliwatts); The voltage is measured in V (volts) and mV (millivolts); The current is measured in mA (milliampere) and UA (microampere).

Therefore, its circuits can be composed of printed circuits, integrated circuits, etc.

Strong electricity and weak electricity are commonly used concepts in physics, and the differences between the two are as follows:1The definition is different:

Strong liquid electricity and weak electricity are two basic interaction forces, which control the interaction of protons and neutrons in the nucleus of the pre-mu Bu nucleus, respectively. Strong electricity is responsible for binding protons and neutrons in the nucleus and keeping the nucleus stable; Weak electricity is responsible for the process of neutron decay into protons or proton decay into neutrons in radioactive decay. 2.

The intensity is different: strong electricity is about ten trillion times stronger than weak electricity, which is one of the reasons why atomic nuclei can exist relatively steadily while there are very few radionuclides. 3.

The range of action is different: strong electricity only acts inside the nucleus, while weak electricity can affect the entire atom. 4.

The particles in question are different: the strong charge is transmitted by a kind of meson, and the weak charge is transmitted by the charged ubitons w+, w- and the neutro weakton z0. In conclusion, strong electricity and weak electricity are two different concepts used to describe the interaction in nuclear reactions and radioactive phenomena, respectively.

The difference between strong and weak current: different AC frequency, different transmission methods, different power, voltage and current size.

1. The AC frequency is different. The frequency of strong electricity is generally 50Hz, which is the frequency of industrial electricity; The frequency of weak current is often high frequency or ultra-high frequency, which is calculated in khz (kilohertz) and MHz (megahertz).

2) The transmission mode is different. Strong electricity is transmitted by transmission lines, and weak electricity is transmitted by wired and wireless. Radios transmit electromagnetic waves.

3) The power, voltage and current are different. The strong electric power is measured in kilowatts and megawatts, the voltage is measured in volts and kilovolts, and the current is measured in amperes and kiloamperes; Weak current power is measured in watts and milliwatts, voltage is measured in volts and millivolts, and current is measured in milliamperes and microamperes, so its circuit can be composed of printed circuits or integrated circuits.

How to distinguish between strong and weak electricity:

1. The basic element of the difference between strong and weak electricity is voltage. Strong electricity has a higher voltage, usually greater than or equal to 220V; The voltage below 220V is weak.

2. Strong electricity conducts electrical energy, while weak electricity conducts signals. For example, electric shavers, flashlights, etc. conduct electrical energy, which belongs to the category of strong electricity.

3. High voltage includes strong electricity, and strong electricity does not necessarily belong to high voltage; Low voltage includes weak current, and weak current must belong to low voltage; Low slip Zen voltage is not necessarily strong electricity, and strong electricity is not necessarily low voltage.

4. The strong electric wire adopts a thick plastic insulation layer, the diameter of the copper core wire is large, and the copper conductor of the inner layer is composed of one or more strands of bare wire. The voltage and current of weak electric wires are not large, so the insulation layer is relatively thin, and the diameter of the copper core wire is relatively small, and it is composed of more than 2 insulated thin wires.

What's the difference?

The main difference between strong current and weak current is the difference in use, strong current is used as a power energy source, and Peiyou weak current is used for information transmission.

Conceptually speaking, strong electricity and weak electricity are generally easy to distinguish, and the main difference is the difference in use.

Strong current is used as a power energy distribution and sales source, and weak current is used for information transmission, and home circuits are divided into strong current and weak electricity.

In the power system, the voltage below 36V is called the safety voltage, the voltage below 1KV is called low voltage, the voltage above 1KV is called high voltage, and the line that directly supplies power to the user is called the distribution line, if the user voltage is 380 220V, it is called the low-voltage distribution line, which is the strong distribution of large electricity in the home decoration.

The general principles of distinction are:

The processing object of strong electricity is energy (electricity), which is characterized by high voltage, high current, high power and low frequency, the main consideration is to reduce loss and improve efficiency, and the processing object of weak current is mainly information, that is, the transmission and control of information, which is characterized by low voltage, small current, small power and high frequency, and the main consideration is the effect of information transmission, such as the fidelity, speed, breadth and reliability of information transmission.