pulsating direct current การใช้

• A pulsating direct current may change in value, " i . e ., " be always present but at different levels, or it may be interrupted completely.
• An AM radio signal can be demodulated by rectifying it, removing the radio frequency pulses on one side of the carrier, converting it from alternating current ( AC ) to a pulsating direct current ( DC ).
• William Sturgeon built an electric motor in 1832 and invented the commutator, a ring of metal-bristled brushes which allow the spinning armature to maintain contact with the electric current and changed the alternating current to a pulsating direct current.