924Board.org

[kaffine]

I'm taking a technical English class at college. For the midterm report we are allowed to pick a subject of interest from the area of our degree. Since my degrees are automotive and electronics I thought I would combine them and do a report on using a DMM to troubleshoot automotive electrical faults. I'm just starting on the report is supposed to be 5 pages long (I'm hoping to keep it that short). It's going to cover Ohm's and Kirchoff's laws, what to look for in a DMM and how to troubleshoot electrical circuits.

If I can actually make a something that is understandable what do I need to do to have it included in this website?

Since the people on this website are my intended readers for this document I'd like to ask a few questions. This will help me know how much I have to explain and what I can assume the reader will already know.

How much interest is there in this article?

How many don't know Ohm's and Kirchoff's?

How many don't know Basic electrical terms and there symbols electromotive force (volts "V"), current (amps "A"), resistance (ohms Ω")?

How many don't know the difference between series, parallel and series-parallels circuits?
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80 924
80 931

The best desciption of an atom boils down to something unknown is doing we don't know what.
Sir Arthur Eddington

[Ozzie]

A few guys here are apt with a multimeter but any article to help the newbies I'm sure will be appreciated.
_________________
Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
Montego Black on black/red
Engineer of Electro/Mechanical Systems Maintenance

[numbbers]

And, of course you know the symbol for current is I, not A.
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1980 924 Turbo

[kaffine]

And the symbol for volts is E in formulas but when you write out a voltage measurement you use "V" after the number same as with current "I" is used in the formula but "A" is used after a number to indicate amps.

I'm almost done with an AAS degree in electronics engineering. And have 4 years experience working on automotive electronics for a living. So if I can get at least some of what I have learned onto paper in an understandable fashion I will be happy. It would also be nice to get an A on the paper

Right now I'm figuring on writing it for someone with no experience with electronics, but I'm not positive yet. I might have to break it up into 2 parts one part for the beginner the second part for the more advaced.
_________________
80 924
80 931

The best desciption of an atom boils down to something unknown is doing we don't know what.
Sir Arthur Eddington

[rcoble]

What I did was break out each system into a separate scematic. I got tired of not being able to glance at the scematic and see the info I needed. Their conventions are NOT consistant or standard.
(I'm an EE)
_________________
78-924 red , my first real car at age 44.
80-928 black, bought from turbo924.
83-928 black, My current effort.

[Paul]

[Peter_in_AU]

kaffine, that would be very useful.

Some electrical theory, a guided tour to a basic multimeter and an example of how to troubleshoot a problem would help a lot of people. Something like "how do I work out what's draining my battery without paying an auto-electrician $200?" as the exercise.
_________________
1979 924 (Gone to a better place)
1974 Lotus 7 S4 "Big Valve" Twin-cam (waiting)
1982 924 (As featured on Wikipedia)

Learn to love your multimeter and may the search be with you

[kaffine]

I haven't heard of the Pauling scale. The others are somewhat familar.

There are also Smith charts, and the telegraphers equations, alot of formulas for wave guides those are fun plumbing for electricity.

Then there are alot of formulas for antennas although I can't remeber any of them and really hope I never run into them again.


If you think the Porsche schematics are bad you should see what I have to use at work when working on Freightliners we get the engineering drawings of the actual wire harness with the distane of the wires and where all the connectors branch off the main harness but no schematic tha actually shows how the circuit works. If I'm working on any other brand I have nothing at all. I've had problems locating fuse boxes trying to troubleshoot can be a nightmare a tone set comes in handy but I have to have an idea where the other end of the wire is.

Well there is no way I can write it to the level of the EEs here. So I'll write it for someone with no electronics training hopefully it'll make sense. I might be posting a few more times when I get the diffrent topics done to see if they make any sense.

I'll be using common point testing using Kirkoff's law for the troubleshooting part so far that is the best method I have seen for electrical circuits. After the class is over I might go in and add more specific info on the diffrent circuits but I wont have time to until after the semester is over.

I'm just hoping I can keep it around 5 pages. Last time I did a report it was 4 pages long it was supossed to be a few sentances.
_________________
80 924
80 931

The best desciption of an atom boils down to something unknown is doing we don't know what.
Sir Arthur Eddington

[numbbers]

rcoble, if you have converted those crappy current flow diagrams into schematics, I would love to get a copy. let me know how much.
_________________
1980 924 Turbo

[rcoble]

numbbers;
I have done about half of my years ( 78 ) systems. I did them as I needed them. IE areas that I wasn't having troubles with, I didn't bother. I am working with a few guys on the 928 list to come up with a translation/guidlines and redraw of that cars massive electrical nightmare. I may come back to the 924 and using the same methodology that we agree on, re-do the 924's drawings.
_________________
78-924 red , my first real car at age 44.
80-928 black, bought from turbo924.
83-928 black, My current effort.