DC ji bo Direct Current dike, lê her du biseyîn "DC Current" de hene. DC current ji bo ragihandina yekbûya dielectric charge de hatîne. Di DC current de, elektronan ji herêm negatif derve yên pozitif digehin bêt guhirtin. Ev nayir û alternating current (AC) circuits de, ku ji bi seran dikarin.
battery yekî taybetî a DC source e. Di battery de, energy elektrik ji energy kimyasî ku di battery de depo kirin were veqetandî. Her deme ku battery bi circuit ê lihaz bike, ji terminal negatif ji terminal pozitif battery jiher flow charge pêk bide.
rectifier çêkirin ji bo converting alternating current to direct current. û inverter çêkirin ji bo converting direct current to alternating current.
DC Current Symbol
DC current constant current e. Bunaqê, symbol of DC current straight line e. The symbol of DC and AC current as shown in the figure below.
Symbol of DC and AC Current
Difference between AC and DC Current
Electrical energy available in the form of Alternating current (AC) or Direct current (DC). In alternating current, the current reverses direction 50-60 times in a second depending on the frequency.
The main differences between AC and DC have been summarized in the below table;
Alternating Current (AC)
Direct Current (DC)
The direction of flow of current
When an alternating current flowing through a circuit, it reverses its direction.
When an alternating current flows through a circuit, it reverses its direction.
Frequency
The frequency of alternating current decides how many times it reverses its direction. If the frequency is 50 Hz, it means the current changes direction 50 times.
Electrons keep changing its direction from forward to backward.
Movement of Electron
The magnitude of the instantaneous current varies with time.
Electrons move only in a forward direction.
Current magnitude
The magnitude of the instantaneous current is varying with time.
The magnitude is constant at each instant of time for pure DC. But it is variable for pulsating DC.
It can connect with the resistive, inductive, and capacitive types of load.
Types
Sinusoidal, Trapezoidal, Square, Triangular
Pure DC and Pulsating DC
Transmission of electrical energy
In a power system, the conventional method to transmit power is the HVAC transmission system. The losses are less but more than the HVDC transmission system.
In a power system, the most emerging technology for transmission systems is the HVDC Transmission system. The losses are very less in the HVDC transmission system.
Convert
It can convert from an AC supply with the help of a rectifier.
Cell phones, electric vehicles, electroplating, flashlights, etc.
Type of load
It can connect with the resistive, inductive, and capacitive types of load.
It can connect only with the resistive type of load.
Bi karanîna sepanê IEE-Business, li her der û her dem amûr bibînin, çareseriyan bistînin, bi pîsporan re têkiliyê ava bikin, û beşdarî hevkariya pîşesaziyê bibin — ev hemû ji pêşveçûna projeyên hêz û karsaziya we re piştgirîyeke tev e.
