What does DC12V mean and what does DC24V mean?

DC12V refers to DC 12 volts, that is, 12V battery for vehicles; DV24V refers to DC 24 volts, that is, 24V battery for vehicles.

In electromagnetism, the amount of electricity passing through any cross-section of a conductor per unit of time is called the current intensity.

Abbreviated as electric current, the current symbol is i, the unit is ampere (a), abbreviated as "ampere" (André Marie Ampere, 1775 1836, French physicist and chemist, outstanding achievements in the study of electromagnetic effects, also contributed to mathematics and physics). SI units of electric current.

Ampere is named after his surname).

The free charge in the conductor is in the electric field force.

Under the action of regular directional movement, an electric current is formed.

Electrically stipulated: the direction of the directional flow of positive charge is the direction of the current. In addition, in the project, the directional flow direction of the positive charge is also the current direction, and the magnitude of the current is expressed by the charge Q flowing through the conductor section per unit time, which is called the current intensity.

Nature has many kinds of carriers that carry electric charges. For example: electrons and electrolytes that can be moved in a conductive body.

Ions and ions within the plasma, hadrons.

quarks within. The movement of these carriers forms an electric current.

Electric currents are classified as alternating currents.

Current and direct current.

Flow. Alternating current: Periodic changes in magnitude and direction.

In life, plug-in wall appliances use civil AC power supply. Alternating current is widely used in family life and industrial production, and the domestic voltage is 220V and the general industrial voltage is 380V, which are all dangerous voltages.

Direct current: The direction does not change over time. The removable external power supply used in daily life provides direct current. Direct current is generally widely used in flashlights (dry batteries).

Mobile phones (lithium batteries) and other small household appliances, etc. Dry batteries (lithium batteries, storage batteries, etc.) are called DC power supplies. Because none of these power supply voltages exceed 24V, they are safe power supplies.

DC24V – means direct current.

24V voltage, AC220V means alternating current.

220V voltage, the two are not the same.

The similarities are: both indicate that the voltage is like jujube; The difference is that the voltage type and voltage value of the two are not the same. You may have seen the above data from the slag barricade on the transformer, which indicates that the voltage is changed from 220V AC to 24V DC.

Direct current (DC), also known as "constant current", constant current is a kind of direct current, which is a direct current that does not change in size and direction, and it was developed by Edison.

discovered. Franklin, America, 1747.

The law of conservation of electric charge was proposed based on experiments, and the terms of positive and negative electricity were defined.

Alternating current (abbreviation: AC) refers to the average operating value of alternating current in a period of time when the direction of the current changes periodically over time.

Zero. Unlike direct current, its direction changes over time, and direct current does not change periodically.

DC is the sign of DC voltage. Pay attention to the distinction when choosing electrical appliances or maintenance. ac is for Communication.

DC24V: Indicates the DC voltage of 24V. Direct current is also known as "constant current", and constant current means that neither the magnitude nor the direction changes over time, such as dry cell batteries (remote control batteries).

Pulsating direct current is when the direction (positive and negative) does not change, but the magnitude changes over time. It was discovered by Edison.

DC power sources include chemical batteries, fuel cells, thermoelectric batteries, solar cells, DC generators, etc. Using direct current, it is also possible to perform electrolysis experiments with water. When an electrode is inserted into water, the negative electrode electrodes electrolyze water into hydrogen, and the positive electrode electrolyzes water into oxygen.

In terms of power transmission, after the 80s of the 19th century, due to the inconvenience of raising the low voltage of DC to high voltage for long-distance transmission, DC transmission has given way to AC transmission. Since the 60s of the 20th century, due to the use of high-voltage and high-power converters to convert direct current into alternating current, the direct current transmission system has regained attention and obtained new development.

Alternating current is widely used in the transmission of electricity, because alternating current transmission is more efficient than direct current transmission under the technical conditions of the past. The power dissipated by the transmitted current on the wire can be calculated using Joule's law (p = i rt), and it is obvious that the energy loss needs to be reduced by reducing the current being transmitted or the resistance of the wire.

Direct current 24 volts.

DC: dc=direct current; AC: ac=alternating current