Power supplies can supply AC or DC current.
There are three main types of power adapters for electronic devices: AC adapters, DC adapters, and universal adapters. AC adapters convert alternating current from a wall outlet to the direct current needed by the device. DC adapters provide direct current power from a battery or other DC power source. Universal adapters can switch between different voltage and plug types to work with a variety of devices worldwide.
the different types of fuels that can be used to produce electricity
the different types of fuels that can be used to produce electricity
smaw and tig(gtaw) are using CC source. because these both types using manual wire feeding. so welder can not able to maintain constant arc length. change in arc length will change voltage. so it needs power supply which should not affected by this arc length = voltage changes. that's why CC type is used for these process. in CC type source change in voltage will not change current much.
Alternating Current "AC" & Direct Current "DC"
Coal, oil, and natural gas
Capacitive loads have a leading power factor. Current leads voltage when there is capacitive reactance. (The opposite is inductive, which is lagging.)
In a circuit, the primary types of sources (or "dutors") are voltage sources and current sources. Voltage sources provide a fixed voltage regardless of the current flowing through them, while current sources deliver a constant current regardless of the voltage across them. Both types can be ideal or real, with ideal sources having no internal resistance and real sources exhibiting some resistance.
AC specifies alternating current and DC means direct current.
There are two types of current AC current DCcurrent
Alternating current and Direct current
Both types of power plants generate electricity by using a renewable energy source - water and wind, respectively. Additionally, both types of power plants harness natural forces to drive turbines that generate electricity.