- Видео 75
- Просмотров 47 069
Maths4Engineers - James Cleves
Добавлен 22 мар 2015
Explaining the fundamental concepts of Mathematics as used in Engineering.
Phasor Diagrams Made Easy - Theory, Waveforms & Animations. Orange Peel.
Series RLC (or RL, RC) Desmos Interactive Graph
www.desmos.com/calculator/lgpradxva2
Parallel RLC (or RL, RC) Desmos Interactive Graph
www.desmos.com/calculator/bvzfekgp74
Series RLC Multisim Circuit
www.multisim.com/content/CaAubyoWng8xK56H6ya2HZ/e4e-series-rlc/
(Just click ‘Simulate)
Parallel RLC Multisim Circuit
www.multisim.com/content/fYpBRoQtqptNEM3EgZUebQ/e4e-parallel-rlc/
(Just click ‘Simulate)
00:00 Phase Vector Basics
00:48 Phase Difference
03:21 Putting Current and Voltage on the Phasor Diagram (Complex Plane)
05:55 Finding the Phase difference between Current and Voltage (Power Factor)
07:27 Desmos Graphs (All Series and Parallel Combinations)
08:34 CIVIL aka “Ivy and The Eye” - Current a...
www.desmos.com/calculator/lgpradxva2
Parallel RLC (or RL, RC) Desmos Interactive Graph
www.desmos.com/calculator/bvzfekgp74
Series RLC Multisim Circuit
www.multisim.com/content/CaAubyoWng8xK56H6ya2HZ/e4e-series-rlc/
(Just click ‘Simulate)
Parallel RLC Multisim Circuit
www.multisim.com/content/fYpBRoQtqptNEM3EgZUebQ/e4e-parallel-rlc/
(Just click ‘Simulate)
00:00 Phase Vector Basics
00:48 Phase Difference
03:21 Putting Current and Voltage on the Phasor Diagram (Complex Plane)
05:55 Finding the Phase difference between Current and Voltage (Power Factor)
07:27 Desmos Graphs (All Series and Parallel Combinations)
08:34 CIVIL aka “Ivy and The Eye” - Current a...
Просмотров: 116
Видео
Basic Trigonometry - all possible types of question (1080 HD)
Просмотров 692 года назад
00:00 Title 00:10 Sine - finding the Opposite side 00:52 Sine - finding the Hypotenuse 01:28 Inverse Sin (SHIFT Sin) finding the Angle 02:06 Cosine - finding the Adjacent side 02:45 Cosine - finding the Hypotenuse 03:19 Inverse Cos (SHIFT Cos) finding the Angle 03:55 Tangent - finding the Opposite side 04:35 Tangent - finding the Adjacent side 05:02 Inverse Tan (SHIFT Tan) finding the Angle For...
R Sine Theta Plus Alpha MADE EASY! Adding Sine and Cosine Waves with Phase Shifts.
Просмотров 7663 года назад
00:00 Welcome! 00:13 Sine or Cosine? 01:23 Adding Sine and Cosine Components explained 04:33 R Sin Theta Plus Alpha STEPS 05:34 Compound Angle Formula Setting up the addition 10:01 FINDING R and ALPHA 11:29 Checking we got it right by graphing 12:31 Understand 'Omega t' ruclips.net/video/R25Pec1xHrE/видео.html 12:32 Adding Sine and Cos with Excel! ruclips.net/video/KECLbE4ZfpE/видео.html
Newton Raphson made easy - an example and the derivation. 1080 HD.
Просмотров 293 года назад
We can use the Newton or Newton-Raphson method to find good approximations of the roots of functions. I bet Newton was fuming when he found out!
Excel - Adding and Graphing Sine Waves with Any Amplitude or Phase
Просмотров 3233 года назад
At Level 3 or HNC Electrical and Electronic Engineering you'll be asked to add sine waves together and graph them. You'll possibly also do this in AS or A-Level Maths. Excel makes the process so much faster than using a calculator to find the sine of angles with or without phase shifts. This video shows you how to create a dynamic graph of sine waves that changes as you change amplitude and pha...
Understanding Angular velocity, Omega t (wt), Sine, Unit Circle and Phase difference
Просмотров 16 тыс.3 года назад
1080 HD - chapters shown below 00:00 Contents 00:25 Y=A Sin(wt) - describing Sine Wave features 00:45 The unit circle 01:11 Sine values for radians and degrees in a right-angled triangle 02:38 Y=A Sin(wt) - describing Sine Wave features 03:17 Understanding Omega (Angular velocity) 04:02 Animation of Sine Function, Unit Circle where f=1Hz 04:37 How Omega affects a Cartesian Sine graph, with form...
Binary to Decimal to Binary Conversion
Просмотров 113 года назад
Watch at 1.5x speed if you wish! It is useful to be able to understand what binary numbers represent in the real world. This video works through examples of conversion between base 10 and base 2. Happy converting :)
Binary Addition - worked examples and theory
Просмотров 183 года назад
Here we add some binary numbers. This was recorded before I bought a decent mic :)
Binary Subtraction - worked examples and theory
Просмотров 93 года назад
This video shows the first and simplest form of binary subtraction, without any mention of Two's Complement. Enjoy :)
Binary Division - worked examples and theory
Просмотров 403 года назад
Division is repeated subtraction. I use the 'bus top method' for binary division, it seems the easiest way to me without having to drop down remainders and faffing about. We see if the divisor (the number we're dividing BY) fits in to the dividend (the number we're dividing); if it does, put a 1 on top, if not, put a zero and look at more columns of the dividend. Simples :)
Binary Multiplication - worked examples and theory
Просмотров 63 года назад
Computers can't actually multiply, all they can do is shift digits, compare them or perform logic functions on them. Multiplication is base two is a process of left-shifting and then adding. Enjoy :)
Proving Boolean Laws using Proteus Logic Gates
Просмотров 3553 года назад
This is the first video regarding Boolean simplification using Boolean Algebra. At school this wasn't well explained so I struggled. I decided to teach myself and then ended up as a senior hardware/firmware designer :) I use Boolean Algebra a lot in my designs; if you ever get stuck with Boolean Algebra, just think back to logic gates and it will all made sense (Hopefully!) :)
Boolean Simplification of Logic Gates including negative logic and DeMorgan's Theorem
Просмотров 323 года назад
The Complement Law states 'A OR NOTA' = 1 Absorption Law States 'A OR NOTA.B' = A B When simplifying truth tables we can choose whether to create expressions for output Q or its complement, NOTQ - we could be quicker using the type that gives less states to consider on our truth table. Here I've deliberately gone for the longer option to prove simple truth tables using the complement law, absor...
Absorption Law Proof using Truth Tables
Просмотров 3913 года назад
Ever wondered where these crazy laws of Boolean Simplification come from? No doubt, 100s of years ago mathematicians used Multisim or Proteus to prove them :) Here we will use truth tables. If you're ever unsure of your Boolean simplification equivalence, you can put your functions into a truth table and check that they are identical. Happy days :)
Rough and ready 3-bit ripple counter video using Multisim Oscilloscope
Просмотров 2083 года назад
Just a quick video to show you how to create and test a 3-bit ripple up-counter using Multisim on a PC. If you have a Multisim live account, flip-flops aren't available without a paid license, but you can use Proteus instead or circuitverse dot org :)
Sine Wave - Introduction to Y = A Sin(wt)
Просмотров 9 тыс.3 года назад
Sine Wave - Introduction to Y = A Sin(wt)
ADDING SINE WAVES with phase shift - R Sine Theta + alpha, also the parallelogram method
Просмотров 9973 года назад
ADDING SINE WAVES with phase shift - R Sine Theta alpha, also the parallelogram method
HOW TO... Rearrange equations aka "Make x the Subject"
Просмотров 367 лет назад
HOW TO... Rearrange equations aka "Make x the Subject"
HOW TO... Expand, Simplify and Factorise Expressions
Просмотров 697 лет назад
HOW TO... Expand, Simplify and Factorise Expressions
Adding a sine wave to a phase-shifted sine wave a.k.a. RSin(Vera+Alf) - James Cleves
Просмотров 3,2 тыс.7 лет назад
Adding a sine wave to a phase-shifted sine wave a.k.a. RSin(Vera Alf) - James Cleves
Simultaneous equations to find Kirchhoff currents (or anything else)
Просмотров 517 лет назад
Simultaneous equations to find Kirchhoff currents (or anything else)
Algebra - Factorising, Expanding, Simplifying.
Просмотров 587 лет назад
Algebra - Factorising, Expanding, Simplifying.
4-bit asynchronous (ripple) up-counter using Proteus. James Cleves.
Просмотров 4 тыс.7 лет назад
4-bit asynchronous (ripple) up-counter using Proteus. James Cleves.
Op Amp Summing Amplifier (as a 4-bit Digital to analogue converter) - James Cleves
Просмотров 3487 лет назад
Op Amp Summing Amplifier (as a 4-bit Digital to analogue converter) - James Cleves
❤ Nice 👍
Nice review. Thanks.
Many thanks!
Is the center 0
Hi, the centre (the X Axis) is where Y is equal to zero. The Y axis is where X is equal to zero. Thanks 😊
you forgot to mention about formula of phase to radian from sin 30 degree = n/6 which is coming from 2.phi divided by 360 degree = (2n/360 degree)
Hi I didn't forget, I put the relevant info but thanks for being vigilant!
Thanks...
1:50
thank you, sir
Heyy what should I do if I want to count number of votes of 4 different person
Excellent presentation Sir. Thank you very much.
I'm working on it.
great representation of phase shift concept
Many thanks! James.
Excellent.. One of the best explanation. Thank you very much Sir🙏🙏🙏
Thanks for taking the time to comment, it's very kind of you and I'm really pleased that it helped! If you need any other videos making, I'd welcome some inspiration! Cheers. James.
very helpful
Thanks a lot clumsyDins. I'm happy to have helped. Take care, James.
Is there an email address to contact James?
Perfect mathematicians
Thank you so much.
Pi over 4 is 0.72 or is my calculator wrong?
Hello Kris, Pi/4 is 0.7854 thanks.
Thank you
You're welcome. Thanks for the comment!
Thank you 🙏
You're very welcome, Aswath. Feel free to see my Electronics4Engineers channel too. All the best, I appreciate the kind comment. James.
6:34 isn’t the frequency of the shown graph 1/(2pi). Because the graph shown has a period equal to 2pi.
Hi, at the time you mentioned, the circuit has done one cycle in 2pi radians. Remember, the x axis here is in radians, not seconds. A one Hz signal will always spin through 2pi radians or 360 degrees in one second. I hope this helps!
This video should be sent to Khan Academy so that the world can benefit
That moment at 3:19 “omega tf?” is giving me life. Hahaha
Thank you deeply for this amazing lesson! It made me see things differently and understand them better. Cheers!
Hi Dillinger, it's great to hear comments like this. It took months to make and it's worth it when people take the time to comment, especially when it helps people understand. My teachers many years ago skipped so much, so it was a challenge to understand, back in the 1990s. Take care and feel free to share. See also Electronics4engineers channel. Thanks again, James.
No sound
B
please add a voice, a silent video will not help our understanding!!!
which is the software u used here
Hi there, this is DESMOS.com, it's great.
Thank you so much! This helps with my homework.
thank you very much!
Hey Alessio - many thanks for the comment. If you have requests, please comment again. Thanks a lot.
Jay - A good question. The 3x3 video is going to be uploaded later today. The matrix must be square (3x3, 4x4, .. nxn). In order to find det(J) for matrix J, we need to take the first row of elements and multiply them by their respective minors (the mini 2x2 matrix determinant around them). See www.mathcentre.ac.uk/resources/uploaded/sigma-matrices9-2009-1.pdf Video to explain will be up soon :) All resources shared on our community. Good question, James.
How would this work if the matrix was say 3x3 or 3x4, does it only work with 2x2 matrices?