direct came first
Alternating current. Direct current is used in batteries.
Alternating current is better than direct current for transmission.
Power lines carry electricity as alternating current.
To convert direct current to alternating current you need either an inverter or a motor-generator set.
direct current.
alternating current and direct current
how dose alternating current and direct current affect heating, ventilation, and air conditioning
direct current
DC or Direct Current. The current is no alternating.
A device called an inverter is used to convert direct current (DC) to alternating current (AC). The inverter switches the direction of the current flow at a rapid rate, creating an alternating current output from the direct current input.
With an inverter
An electrical device that converts alternating current to direct current is known as a rectifier. An inverter is a device that converts direct current to alternating current.