# Electronics Formulas & Diagrams

#### m4yh3m

Joined Apr 28, 2004
186
Greetings all! I would like to announce that I am creating a formula and a diagram document containing all important stuff from electronics! While I have quite a bit of information already saved in a .doc file, I am awaiting the arrival of Adobe Acrobat so I can create PDF files.

Currently, I have an expanding load of AC formulas, Recangular to Polar to Rectangular, Phasor formats, time, frequency, etc. What I would like from you is help making the document more organized.

Also in works is a document for digital circuits containing diagrams and theorems of logic gates.

I hate to brag but, I know the document works. I took my midterm in Electronics Technology Fundamentals (AC/DC Circuit Analysis) and I finished in less than 30 mins. Heck, I was even nice and printed up a copy for all of the class. I enjoy doing stuff like this... I always like having the important information at my fingertips with no b.s. hiding it deep within the middle half of the text books. I hope to hear your feed back!

Oh, here's a screenshot of it.

(And it's cramped up due to tryin to fit as much as possible on one page for exam usage)

#### Attachments

• 114.1 KB Views: 121

#### mozikluv

Joined Jan 22, 2004
1,435
hi electrimayhem,

your idea is very good and i believe that would be most welcome here. as a suggestion if you don't mind, how about a little explanation on how and why that particular is to be used.

#### Dave

Joined Nov 17, 2003
6,969
Very impressive electricmayhem, and as mozikluv said it would be a welcome addition to the community.

Maybe an idea, organise the formulae in the format that the All About Circuits site is organised:

1. DC Circuits
2. AC Circuits

etc

Basically the simpler, more fundamental equations are at the start of the document and the more complex, specialised ones (eg. Digital etc) come in later sections. Also how about a basic Mathematics section that contains Maths specific to electronics (eg complex numbers etc) just for completeness.

Good luck with the document and keep us posted on the developments.

#### Hamster

Joined Mar 16, 2004
16
Quick reference documents such that you present can be very useful. Any thing that you may have to offer this community is greatly appreciated. Most relevant textbooks contain some form of quick reference. That may be a good starting place to help with the organization. Many books are made for the sole intention of being a quick reference. I have even seen actually cards sold at college bookstores.

Paul

#### m4yh3m

Joined Apr 28, 2004
186
I got my Acrobat software and have already started writing out the intro to electricity. Something crossed my mind tho.
For those of you who aren't aware, there are two forms of current flow:

1. Electron Flow - Describes the flow of electroncs from negative to positive
2. Conventional Flow - Describes the flow of positive ions from positive to negative

Now my issue: Grounding.

Ground is usually placed below the negative terminal on the power source. Why does no ground fault occur? What are helpful guidelines for placing ground?

#### Leo

Joined May 11, 2004
6
I am not sure about what I am going to say will answer your question. But, you can always tell me to shut up

Have you seen how car wired? It uses the metal body as a big negative wire. All the current flow through wires and comes back through car's metal body to the battery. Now, same is the AC power. It uses the mother earth as a big wire for the return current.

What do you mean "placing ground"? For the houses they uses clod water pipe if partial buried into ground, or put a copper rod into concrete slat, or just use a long enough copper rod buried into earth. It's call electrode system. Is that what you want to know?

Leo

#### Dave

Joined Nov 17, 2003
6,969
electricmayhem,

I have merged together your two topics regarding the diagram document and grounding as they follow a similar theme.

If this is a problem, PM me and we'll sort it out.

Thanks.

#### m4yh3m

Joined Apr 28, 2004
186
Here's just a sample of it.

#### Attachments

• 89.7 KB Views: 1,391

#### Dave

Joined Nov 17, 2003
6,969
I have merged the sample of the data sheet with the original post for this topic, just so we don't have masses of threads about the same thing. I have also pinned this topic to the top of the General Electronics forum.

Having looked at the data sheet, I am very impressed, I like the simple easy to read format that is presented. I think it does need organising with headers so that you can easily scan down to the section you wish to look at - its not such a problem at the moment with a small data sheet but as it develops in size this will become increasingly important.

#### vrek

Joined Aug 29, 2004
8
Any advances since May on this project?

#### hotwaterwizard

Joined Oct 16, 2004
24
You Forgot Something Important.

[attachmentid=213]

#### Attachments

• 7.5 KB Views: 222

#### hotwaterwizard

Joined Oct 16, 2004
24
[attachmentid=214]You Forgot This Too!

#### Attachments

• 12.3 KB Views: 207

#### m4yh3m

Joined Apr 28, 2004
186
Well, I found the last edition of my special sheet, I'm going to have to redo it since I can't seem to find the original doc file.

BTW -- This file is not a "teaching" file. It's merely a reference page. It came in quite handy for my midterm and final exam. My professor said "You can use 1 sheet of paper to put notes on" Naturally, my handwriting is much bigger than the fonts I can use on Word...so I crammed as much crap as I could onto that sheet...I tell you I got done with that final exam in less than 15 mins. It was great. The professor even liked the sheet (since I had created it before the exam) and made copies for other people to use... but since they didn't study up on the formulas, I'm sure they were lost.

Here it is tho... a good helping of AC & DC Formulas. I'll be working on re-creating it soon. I'll also repost my Logic sheet as well when I can find it.

Enjoy!

----
Edit:

You cannot view this in 5.x or lower due to the optimizations I ran to try and make the file as small as possible.

Shout out to Adobe for making such a fine piece of software, and the people who created the wonderful compression algorithms that really put the shrink on my file ;P The DOC was around 1 megabyte

----
Edit #2 hehehe

Mods -- Please delete the other posts, with the exception of those wonderful pics of the Ohm's/Watt's Law and Resistor Color Codes.

Viewers -- If you find it useful, please let me know! BTW -- That email address is no longer existant (on the PDF). Send me a message on here. Don't redistribute it too much, as I do plan on making a new version in the near future.

Peace & Chicken Grease...don't get none on ya!

#### Attachments

• 69.4 KB Views: 303

#### Ramasule

Joined Nov 6, 2004
12

#### m4yh3m

Joined Apr 28, 2004
186
Originally posted by Ramasule@Nov 6 2004, 09:55 PM
[post=3392]Quoted post[/post]​

That sheet covers my first semester in Fundamental AC/DC Electronics, which only covered half the book. As soon as I complete the rest of the book, I'll make an additional sheet.

#### Frank

Joined Nov 10, 2004
1
Nice chart.

#### m4yh3m

Joined Apr 28, 2004
186
Joy of Joys! As I was sorting out the depths of my backup drive, I found my original documents! All that time and effort is not lost!

The only thing I have updated on the documents is my email address.

I will be fixing little visual mistakes later on.

Also, I have a website coming (hosted by a wonderful Sysop who ran a most kickass bbs!) that will host all kinds of odds and ends...namely all the documents I create, as well as other information I feel is useful and can provide help to those who have ran out of resources. I'll post the URL later on. Still busy cleaning the hard drive and doing calculus and programing (some of which will appear on the website as well -- Getting the derivative of y= 1 / (sqrt(x-1)) is a pisser!) And of course, all will be as detailed as I can get it.. That particular problem listed above will have several lines worth of steps to show you how to get the answer!

Anywho, here are the files with my updated email address! Enjoy!

**IMPORTANT**
Remember -- These PDFs use Acrobat v6 compression! It is NOT compatible with v5.x!
Make sure you have the latest version of Acrobat, or else it will tell you the file is corrupt.

-- Mods --

Edited: I want to thank hotwaterwizard for the two images - Ohm's Law and Color Code. I'm reposting the images so that all previous messages can be deleted. Thanks again, hotwaterwizard!

#### choyduc

Joined Dec 24, 2004
2
Originally posted by electricmayhem@May 12 2004, 04:37 PM
I got my Acrobat software and have already started writing out the intro to electricity. Something crossed my mind tho.
For those of you who aren't aware, there are two forms of current flow:

1. Electron Flow - Describes the flow of electroncs from negative to positive
2. Conventional Flow - Describes the flow of positive ions from positive to negative

Now my issue: Grounding.

Ground is usually placed below the negative terminal on the power source. Why does no ground fault occur? What are helpful guidelines for placing ground?
[post=1371]Quoted post[/post]​
I became aware of the conventional flow way back in 57 in Basic Elentronics at Keesler AFB. Some Navy instructional films were used in the solid state class and this was referred to as hole flow as opposed to electron flow. We were told that the Navy taught this in all their electronics schools. Never did learn if that was true or not.
As to your question I'm not connected on all terminals today, so i'm not sure just what you're asking.

James