Thread: Electrical Basics

Hi All,

I realize this is borderline off topic, but seems relevant with respect to some recent threads.

Siemens Basics of Electricity Course

Table of Contents
Introduction ...............................................................................2
Electron Theory .........................................................................4
Conductors, Insulators and Semiconductors .................................5
Electric Charges ........................................................................7
Current .....................................................................................9
Voltage ................................................................................... 11
Resistance .............................................................................. 13
Simple Electric Circuit ............................................................. .15
Ohm’s Law ............................................................................. .16
DC Series Circuit .................................................................... .18
DC Parallel Circuit .....................................................................23
Series-Parallel Circuits ..............................................................30
Power ......................................................................................34
Magnetism ...............................................................................37
Electromagnetism .....................................................................39
Introduction to AC .....................................................................42
AC Generators .........................................................................44
Frequency ................................................................................47
Voltage and Current ..................................................................48
Inductance ................................................................................51
Capacitance .............................................................................56
Inductive and Capacitive Reactance ............................................61
Series R-L-C Circuit ..................................................................67
Parallel R-L-C Circuit ................................................................69
Power and Power Factor in an AC Circuit .................................. 71
Transformers ...........................................................................75
Three-Phase Transformers ........................................................80
Review Answers .......................................................................83
Final Exam ..............................................................................84


SEIMENS electrical 1.pdf (1.4M PDF)

SEIMENS electrical 2.pdf (1.5M PDF)

GQ kindly provided the files, I looked but there is no copyright notice that I could see.

Regards
Ray

Edit fixed link, thanks Geoff.

Thanks for the links, the second one doesn't work - page not found.

Do we get a certificate if we pass the final exam ?

MIKE

Thanks Ray

Excellent links and very handy to have.

Regards
Paul

Pffft, nonsense not to be believed. I see no reference to the smoke fairy in any of it!

Here is the next installment, thanks again to GQ

Control Components http://www.etech.net.au/SEIMENS_Cont...mponents_1.pdf

AC Motors Part 1 http://www.etech.net.au/Seimens_AC_Motors_1.pdf
AC Motors Part 2 http://www.etech.net.au/Seimens_AC_Motors_2.pdf

And the long awaited AC Drives...

AC Drives Part 1 http://www.etech.net.au/Seimens_AC_Drives_1.pdf
AC Drives Part 2 http://www.etech.net.au/Seimens_AC_Drives_2.pdf
AC Drives Part 3 http://www.etech.net.au/Seimens_AC_Drives_3.pdf

The Rockwell introduction to Vector Control Drives. (this one is power point)
Vector Drives http://www.etech.net.au/TorqueProdACDrives.ppt

If you want to go deeper and understand more about motor winding and control of different motor types, I can recommend... and, I'd be interested to hear of others to add to the list.

"Electric Motor Repair" by Robert Rosenberg
"Practical Electric Motor Handbook" by Irving Gottlieb

And for the real basic stuff there's none better than "Electricity and Magentism" by Bleaney and Bleaney (just be sure to brush up on your vector calculus first )

Regards
Ray

Edit Bleaney and Bleaney can be downloaded from http://archive.org/details/ElectricityMagnetism2ndEd (it's a 35 MB PDF) and pretty heavy on the maths, if you haven't done vector calculus it might not mean much..

Originally Posted by morrisman

Do we get a certificate if we pass the final exam ?

MIKE

Hi Mike,

Yes of course, something framed, preferably in black frame with gold embossing that you can put up on the workshop wall would be appropriate.. we've only had just one disappointing result so far..

Regards
Ray

Hi Ray,
Thanks for taking the time to post those, and also thanks Greg.

Dave

PS
You can lead a horse to water, but you cant make it drink.

new knowledge always keeps the mind alive TY Ray

Originally Posted by Dave J

Hi Ray,
Thanks for taking the time to post those, and also thanks Greg.

Dave

PS
You can lead a horse to water, but you cant make it drink.

My wife is allergic to horse hair and always says "you can lead a horse to water but you can't make it drown". Maybe that would be more appropriate?

Ewan

I've downloaded AC motors 1 .... on dialup

Thanks for posting it all

Originally Posted by Ueee

My wife is allergic to horse hair and always says "you can lead a horse to water but you can't make it drown". Maybe that would be more appropriate?

Ewan

Just shoot the bastard. If I were prime minister, I would declare ALL horse floats to be illegal.

Ray and Greg, Thank you.

Ray and Greg,

Thanks for this info.

I have some reading to do as I have not looked at much electrical motor and control theory since high school physics.

The struggle will be worth it.

Quentin

I've read through AC 1 ..it's easy to understand , in plain language .

They don't mention why the stator and rotor are made from thin laminations . Is it eddy currents ? Eddy Currents induced into a large single lump would degrade the performance ?

MIKE