Download presentation

Presentation is loading. Please wait.

Published byLuca Sloman Modified over 2 years ago

1
p212c32: 1 Alternating Current Voltage Source : v(t) = V cos t Current Source : i(t) = I cos t Phasors: a graphical method for (combinations) of trigonometric functions t I i(t)=I cos t

2
p212c32: 2 G Full Wave Rectifier i t I rav = (2/ I

3
p212c32: 3 RMS values Root-Mean-Square: i(t) i 2 (t)

4
p212c32: 4 t I i(t)=I cos t R v(t)= Vcos( t) V=I R v(t)=V cos t Current is in phase with Voltage

5
p212c32: 5 L i(t)= Icos( t) t I i(t)=I cos t V=IX L v(t)=V cos ( t+90°) Current lags Voltage Voltage leads Current

6
p212c32: 6 t I i(t)=I cos t V=IX L v(t)=V cos t Current leads Voltage Voltage lags Current i(t)= Icos( t) qq q C

7
p212c32: 7 R XLXL XCXC

8
p212c32: 8 L-R-C Circuit i = I cos( t) L C R i(t)=Icos( t) v(t)=Vcos( t+ ) = IX L cos( t+ ) + IRcos( t) + IX C cos( t ) v L (t)=IX L cos( t+ ) v R (t)=IRcos( t) v C (t)=IX C cos( t )

9
p212c32: 9 v(t)=Vcos( t+ ) = IX L cos( t+ ) + IRcos( t) + IX C cos( t ) I V R =IR V L =IX L V C =IX C V L - V C =IX V=I Z I V R =IR V L =IX L V C =IX C V L - V C =IX V=I Z Z 2 = R 2 + X 2 = R 2 + (X L X C ) 2 tan( ) = X/R

10
p212c32: 10

11
p212c32: 11 LRC series circuit example

12
p212c32: 12 Power

13
p212c32: 13 Series Resonance log( ) I = V/Z

14
p212c32: 14 I oo HW: add Q, calculations to all rlc series HW problems

15
p212c32: 15 LRC series circuit example (more)

16
p212c32: 16 LRC series circuit example (and more)

17
p212c32: 17 Parallel L-R-C Circuit i L (t)= I L cos( t-90° ) L CR i = I cos( t+ ) = I L cos( t-90° ) + I R cos( t) + I C cos( t ) i R (t)= I R cos( t) i C (t)= I C cos( t ) v(t)= Vcos( t) = V/X L cos( t-90° ) + V/R cos( t) + V/X C cos( t )

18
p212c32: 18 V IRIR ILIL ICIC I C - I L I=V/Z V IRIR ICIC ILIL I C - I L I=V/Z I 2 = I R 2 + (I C I L ) 2 tan( ) = (I C I L )/I R i = I cos( t+ ) = I L cos( t-90° ) + I R cos( t) + I C cos( t )

19
p212c32: 19

20
p212c32: 20 LRC parallel circuit example

21
p212c32: 21 Parallel “Resonance” log( )

22
p212c32: 22

23
p212c32: 23 Transformers: Ferromagnetic Materials Strengthen Flux N 1 V 1, I 1 Primary N 2 V 2, I 2 Secondary B

24
p212c32: 24 Transformers N 1 V 1, I 1 Primary N 2 >N 1 => V 2 > V 1 Step-Up Transformer N 2 V 2 < V 1 Step-Down Transformer N 2 V 2, I 2 Secondary B

25
p212c32: 25 A coffee maker from Europe is designed to operate on a 240-V line (rms) to obtain 960W of power. (a) Determine what characteristics are needed by a transformer so that the proper delivery voltage be obtained from the US standard voltage of 120 V (rms)? (b) What current is drawn at the secondary? (c) What is the resistance of the coffee maker? (d) What current is drawn from the 120 V outlet by the primary? (e) What is the power delivered by the 120 V source?

Similar presentations

Presentation is loading. Please wait....

OK

Chapter 5 Test Review Sections 5-1 through 5-4.

Chapter 5 Test Review Sections 5-1 through 5-4.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on traction rolling stock wheels Ppt on napoleon and french revolution Ppt on energy in hindi Edit ppt online Free ppt on business communication Ppt on polynomials free download Free ppt on motivational skills Ppt on right to education in hindi Ppt on object-oriented programming language Ppt on leadership style of bill gates