Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download AC Current and Voltage
Document related concepts
Ground loop (electricity) wikipedia , lookup
Ground (electricity) wikipedia , lookup
War of the currents wikipedia , lookup
Pulse-width modulation wikipedia , lookup
Power inverter wikipedia , lookup
Stepper motor wikipedia , lookup
Mercury-arc valve wikipedia , lookup
Power engineering wikipedia , lookup
Variable-frequency drive wikipedia , lookup
Distribution management system wikipedia , lookup
Electrical ballast wikipedia , lookup
Electrical substation wikipedia , lookup
Schmitt trigger wikipedia , lookup
Current source wikipedia , lookup
Three-phase electric power wikipedia , lookup
History of electric power transmission wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Power MOSFET wikipedia , lookup
Power electronics wikipedia , lookup
Voltage regulator wikipedia , lookup
Switched-mode power supply wikipedia , lookup
Buck converter wikipedia , lookup
Current mirror wikipedia , lookup
Surge protector wikipedia , lookup
Opto-isolator wikipedia , lookup
Voltage optimisation wikipedia , lookup
Stray voltage wikipedia , lookup
Transcript
Higher Physics a.c. voltages and currents a.c. Voltages and Currents • We know that a.c. stands for alternating current. • An a.c. current is so-called as it continuously changes size and direction. • A voltage that produces such a current is called an a.c. voltage. • When working with a.c. currents and voltages we often need to use a kind of average value. r.m.s. Values • In Higher, we call this ‘average’ the r.m.s. value. • ‘r.m.s.’ stands for ‘root mean square’. • The r.m.s. value of an a.c. current or voltage supply the same amount of energy to a lamp or heater as the equivalent d.c. voltage would do. • 𝑉𝑟𝑚𝑠 = 𝑉𝑑𝑐 Link between peak voltage and rms voltage.
