you postion

Alternating current

发布日期:2024-05-08 14:42:00   浏览量 :260
发布日期:2024-05-08 14:42:00  
260

Alternating current (AC) is an electric current that periodically reverses direction and changes its magnitude continuously with time, in contrast to direct current (DC), which flows only in one direction. Alternating current is the form in which electric power is delivered to businesses and residences, and it is the form of electrical energy that consumers typically use when they plug kitchen appliancestelevisionsfans and electric lamps into a wall socket. The abbreviations AC and DC are often used to mean simply alternating and direct, respectively, as when they modify current or voltage.[1][2]

The usual waveform of alternating current in most electric power circuits is a sine wave, whose positive half-period corresponds with positive direction of the current and vice versa (the full period is called a cycle). In certain applications, like guitar amplifiers, different waveforms are used, such as triangular waves or square wavesAudio and radio signals carried on electrical wires are also examples of alternating current. These types of alternating current carry information such as sound (audio) or images (video) sometimes carried by modulation of an AC carrier signal. These currents typically alternate at higher frequencies than those used in power transmission.



上海发控工贸有限公司
Shanghai Fakong Industrial and Trading Co.,Ltd.
Address:No.192 Jianxin Avenue,Lvxiang Town,Jinshan District,Shanghai,China
Copyright © 上海发控工贸有限公司 Shanghai Fakong Industrial and Trading Co.,Ltd. 沪ICP备2021020145号
电子名片E-Name card
免责声明:本站部分资源来源于网络,如有侵权请及时联系客服,我们将尽快处理
云计算支持 反馈 枢纽云管理