inductance and inductive reactance inductance - the characteristic of an electrical ckt that oppose...
TRANSCRIPT
![Page 1: Inductance and Inductive Reactance Inductance - the characteristic of an electrical ckt that oppose any change in current Symbol is “L” measured in a Henry](https://reader036.vdocuments.us/reader036/viewer/2022083005/56649f1f5503460f94c37530/html5/thumbnails/1.jpg)
Inductance and Inductive ReactanceInductance and Inductive Reactance
Inductance- the characteristic of an electrical ckt that oppose any change in current
Symbol is “L” measured in a Henry (H)
Inductors – Coils, inductors, reactors or chokes
![Page 2: Inductance and Inductive Reactance Inductance - the characteristic of an electrical ckt that oppose any change in current Symbol is “L” measured in a Henry](https://reader036.vdocuments.us/reader036/viewer/2022083005/56649f1f5503460f94c37530/html5/thumbnails/2.jpg)
Faraday’s Law Faraday’s Law
States that the induced voltage depends on:
the number of turns in the coil,
The strength of the magnetic field
How fast the conductor cuts across the magnetic field
![Page 3: Inductance and Inductive Reactance Inductance - the characteristic of an electrical ckt that oppose any change in current Symbol is “L” measured in a Henry](https://reader036.vdocuments.us/reader036/viewer/2022083005/56649f1f5503460f94c37530/html5/thumbnails/3.jpg)
Lenz’s LawLenz’s Law
![Page 4: Inductance and Inductive Reactance Inductance - the characteristic of an electrical ckt that oppose any change in current Symbol is “L” measured in a Henry](https://reader036.vdocuments.us/reader036/viewer/2022083005/56649f1f5503460f94c37530/html5/thumbnails/4.jpg)
Inductance Inductance
All ckts have conductors Has its greatest impact when there is a change in
current Does not oppose current only the change in current AC ckt current always changes do to the sine wave
![Page 5: Inductance and Inductive Reactance Inductance - the characteristic of an electrical ckt that oppose any change in current Symbol is “L” measured in a Henry](https://reader036.vdocuments.us/reader036/viewer/2022083005/56649f1f5503460f94c37530/html5/thumbnails/5.jpg)
Coil InductanceCoil Inductance
Four factors Number of turns in the coil
Diameter of the coil and length
Type of material
Number of layers of the windings
![Page 6: Inductance and Inductive Reactance Inductance - the characteristic of an electrical ckt that oppose any change in current Symbol is “L” measured in a Henry](https://reader036.vdocuments.us/reader036/viewer/2022083005/56649f1f5503460f94c37530/html5/thumbnails/6.jpg)
Power Loss in an InductorPower Loss in an Inductor
Copper losses I2R
Iron – core inductors Hysteresis loss Eddy-current loss
![Page 7: Inductance and Inductive Reactance Inductance - the characteristic of an electrical ckt that oppose any change in current Symbol is “L” measured in a Henry](https://reader036.vdocuments.us/reader036/viewer/2022083005/56649f1f5503460f94c37530/html5/thumbnails/7.jpg)
Transformer Action Transformer Action Mutual Inductance
![Page 8: Inductance and Inductive Reactance Inductance - the characteristic of an electrical ckt that oppose any change in current Symbol is “L” measured in a Henry](https://reader036.vdocuments.us/reader036/viewer/2022083005/56649f1f5503460f94c37530/html5/thumbnails/8.jpg)
Inductive ReactanceInductive Reactance
the reactance of an inductor is called inductive reactance. In other words, an inductors resistance in an AC circuit is called Inductive Reactance
![Page 9: Inductance and Inductive Reactance Inductance - the characteristic of an electrical ckt that oppose any change in current Symbol is “L” measured in a Henry](https://reader036.vdocuments.us/reader036/viewer/2022083005/56649f1f5503460f94c37530/html5/thumbnails/9.jpg)
Inductive ReactanceInductive Reactance
Reactance (x) is expressed in Ohms and Ohms law applies to inductive reactive circuits
Inductive Reactance represented by XL
Depends on: Frequency usually 60 hz Inductance of the coil (H) - henry
![Page 10: Inductance and Inductive Reactance Inductance - the characteristic of an electrical ckt that oppose any change in current Symbol is “L” measured in a Henry](https://reader036.vdocuments.us/reader036/viewer/2022083005/56649f1f5503460f94c37530/html5/thumbnails/10.jpg)
Inductive ReactanceInductive Reactance
As a Formula
XL = 2пfL
XL = inductive reactance Ω
П = 3.14
f = Frequency in Hz
L = inductance in henrys
![Page 11: Inductance and Inductive Reactance Inductance - the characteristic of an electrical ckt that oppose any change in current Symbol is “L” measured in a Henry](https://reader036.vdocuments.us/reader036/viewer/2022083005/56649f1f5503460f94c37530/html5/thumbnails/11.jpg)
Voltage, Current and InductanceVoltage, Current and Inductance
Ohms Law
LX
E Inow or
R
E I ==
![Page 12: Inductance and Inductive Reactance Inductance - the characteristic of an electrical ckt that oppose any change in current Symbol is “L” measured in a Henry](https://reader036.vdocuments.us/reader036/viewer/2022083005/56649f1f5503460f94c37530/html5/thumbnails/12.jpg)
Sine Wave Pure ResistanceSine Wave Pure Resistance
![Page 13: Inductance and Inductive Reactance Inductance - the characteristic of an electrical ckt that oppose any change in current Symbol is “L” measured in a Henry](https://reader036.vdocuments.us/reader036/viewer/2022083005/56649f1f5503460f94c37530/html5/thumbnails/13.jpg)
Sine Wave With ReactanceSine Wave With Reactance
![Page 14: Inductance and Inductive Reactance Inductance - the characteristic of an electrical ckt that oppose any change in current Symbol is “L” measured in a Henry](https://reader036.vdocuments.us/reader036/viewer/2022083005/56649f1f5503460f94c37530/html5/thumbnails/14.jpg)
Phase DiagramPhase Diagram
CCWRotation
90
+y
-y
+xE
= 1
20
V
I = 12A
![Page 15: Inductance and Inductive Reactance Inductance - the characteristic of an electrical ckt that oppose any change in current Symbol is “L” measured in a Henry](https://reader036.vdocuments.us/reader036/viewer/2022083005/56649f1f5503460f94c37530/html5/thumbnails/15.jpg)
Power in an Inductive CircuitPower in an Inductive Circuit
Purely resistive
Inductive Reactance
Vars (Q) – volt amps of reactance
VA (S) - Volt amps
Power (P) – Power of load