hey electrical engineer/physics people!

[fatty4ksu]

I'm in the strange position of having to start with circuit theory 2, so I need a nice book with good examples/solutions to help me brush up on circuit theory 1. The ones our school uses doesn't have a solutions guide, and is getting bad reviews.

Any suggestions would be nice.

 

[RESmonkey]

I'd like to know this, as well.

 

[Alphathree33]

It depends what you mean by "Circuit Theory 1".

My "beginner" circuits course from EE in university is a thousand pages or something... should I recommend that to you?

If this is high school and/or college, you can probably do this online. If it's university (in which case I've never heard of a course called "Circuit Theory"), you're screwed.

Seriously, just go learn this:

-- V = IR.
-- Pick a point in the circuit that you're going to "ground". This point will be zero voltage relative to any other point.
-- Any two resistors in series R1 and R2 can be combined into a single resistor R3 = R1 + R2
-- Any two resistors in parallel R1 and R2 can be combined into a single resistor (1/R3) = (1/R1) + (1/R2)
-- Node analysis (concept: write down an expression for the voltage at every point in the circuit in terms of Vs and Rs)
-- Mesh analysis (concept: write down an expression for the current in every "loop" in the circuit in terms of Is and Rs)

You can Google all of the above concepts and figure it out in a day or two if you have a brain.

If you can't, definitely don't take engineering.

 

[legoman666]

Originally posted by: Alphathree33
It depends what you mean by "Circuit Theory 1".

My "beginner" circuits course from EE in university is a thousand pages or something... should I recommend that to you?

If this is high school and/or college, you can probably do this online. If it's university (in which case I've never heard of a course called "Circuit Theory"), you're screwed.

Seriously, just go learn this:

-- V = IR.
-- Pick a point in the circuit that you're going to "ground". This point will be zero voltage relative to any other point.
-- Any two resistors in series R1 and R2 can be combined into a single resistor R3 = R1 + R2
-- Any two resistors in parallel R1 and R2 can be combined into a single resistor (1/R3) = (1/R1) + (1/R2)
-- Node analysis (concept: write down an expression for the voltage at every point in the circuit in terms of Vs and Rs)
-- Mesh analysis (concept: write down an expression for the current in every "loop" in the circuit in terms of Is and Rs)

You can Google all of the above concepts and figure it out in a day or two if you have a brain.

If you can't, definitely don't take engineering.

Yea, you pretty much summed up my Networks Analysis I class in 6 lines of text.

 

[Alphathree33]

Oops, two more key concepts:

-- The current going into a node must equal the current leaving a node (if 100 mA splits into two wires, I1 + I2 = 100 mA)
-- The voltage drop around a loop is zero (if a 10V battery is attached to a resistor, the voltage drop across the resistor is 10V)
-- Changing the direction of pretty much anything in a circuit always introduces a negative sign (changing the direction of the voltage drop, of the current, of the path you're taking through the circuit, flipping a battery around, etc... although you can't "flip" a resistor, the voltage drop across it one way is exactly opposite of the voltage drop across the resistor the other way).

 

[Alphathree33]

And if you need more than this, be prepared for a world of calculus hurt because I'll have to teach you Laplace transforms.

 

[legoman666]

Originally posted by: Alphathree33
And if you need more than this, be prepared for a world of calculus hurt because I'll have to teach you Laplace transforms.

We just started on those in Networks Analysis II. Don't seem too difficult.

 

[RESmonkey]

Hmph, I already knew that. That's the intro to circuits class in a nutshell? Cool.

 

[Leros]

Originally posted by: Alphathree33
And if you need more than this, be prepared for a world of calculus hurt because I'll have to teach you Laplace transforms.

I just took a Linear Systems and Signals exam. Fourier Transform, Discrete Fourier Transform, Laplace Transform, Z-Transforms. That was pretty much it.

 

[JohnCU]

use http://ocw.mit.edu

 

[JohnCU]

Originally posted by: Alphathree33
It depends what you mean by "Circuit Theory 1".

My "beginner" circuits course from EE in university is a thousand pages or something... should I recommend that to you?

If this is high school and/or college, you can probably do this online. If it's university (in which case I've never heard of a course called "Circuit Theory"), you're screwed.

Seriously, just go learn this:

-- V = IR.
-- Pick a point in the circuit that you're going to "ground". This point will be zero voltage relative to any other point.
-- Any two resistors in series R1 and R2 can be combined into a single resistor R3 = R1 + R2
-- Any two resistors in parallel R1 and R2 can be combined into a single resistor (1/R3) = (1/R1) + (1/R2)
-- Node analysis (concept: write down an expression for the voltage at every point in the circuit in terms of Vs and Rs)
-- Mesh analysis (concept: write down an expression for the current in every "loop" in the circuit in terms of Is and Rs)

You can Google all of the above concepts and figure it out in a day or two if you have a brain.

If you can't, definitely don't take engineering.

don't forget thevenin's and norton's equivalent

 

[Leros]

Originally posted by: JohnCU

Originally posted by: Alphathree33
It depends what you mean by "Circuit Theory 1".

My "beginner" circuits course from EE in university is a thousand pages or something... should I recommend that to you?

If this is high school and/or college, you can probably do this online. If it's university (in which case I've never heard of a course called "Circuit Theory"), you're screwed.

Seriously, just go learn this:

-- V = IR.
-- Pick a point in the circuit that you're going to "ground". This point will be zero voltage relative to any other point.
-- Any two resistors in series R1 and R2 can be combined into a single resistor R3 = R1 + R2
-- Any two resistors in parallel R1 and R2 can be combined into a single resistor (1/R3) = (1/R1) + (1/R2)
-- Node analysis (concept: write down an expression for the voltage at every point in the circuit in terms of Vs and Rs)
-- Mesh analysis (concept: write down an expression for the current in every "loop" in the circuit in terms of Is and Rs)

You can Google all of the above concepts and figure it out in a day or two if you have a brain.

If you can't, definitely don't take engineering.

don't forget thevenin's and norton's equivalent

My Intro to EE class also covered the first order devices in circuits, capacitors and inductors.

 

[fatty4ksu]

Originally posted by: Alphathree33
It depends what you mean by "Circuit Theory 1".

My "beginner" circuits course from EE in university is a thousand pages or something... should I recommend that to you?

If this is high school and/or college, you can probably do this online. If it's university (in which case I've never heard of a course called "Circuit Theory"), you're screwed.

Seriously, just go learn this:

-- V = IR.
-- Pick a point in the circuit that you're going to "ground". This point will be zero voltage relative to any other point.
-- Any two resistors in series R1 and R2 can be combined into a single resistor R3 = R1 + R2
-- Any two resistors in parallel R1 and R2 can be combined into a single resistor (1/R3) = (1/R1) + (1/R2)
-- Node analysis (concept: write down an expression for the voltage at every point in the circuit in terms of Vs and Rs)
-- Mesh analysis (concept: write down an expression for the current in every "loop" in the circuit in terms of Is and Rs)

You can Google all of the above concepts and figure it out in a day or two if you have a brain.

If you can't, definitely don't take engineering.

Here is the class description.

http://www.eece.ksu.edu/conten...courses/EECE%20510.pdf

I hear the book they offer is bad, and doesn't offer a solutions guide. I'd like one as it's the way I study for most classes, and would help with an introductory class.

I was formerly a non-ee, and took a generalized ee class that technically fits circuit theory 1. However, that was 2 years ago and I don't want to enter circuit theory 2 raw.

 

[duragezic]

LOL, an Indian professor I had for circuits, his advice came down to something like this often:

"C'mon, back to the basics mahn! Apply K-C-L (or K-V-L), yah?"

So yeah, just do that.

Heh though he was right... decent prof.

 

[Fenixgoon]

Originally posted by: Alphathree33
And if you need more than this, be prepared for a world of calculus hurt because I'll have to teach you Laplace transforms.

i liked laplace transforms! made diffEQ's so much more pleasant.

i'm curious about all the other mathematical transformations, although I don't know whether I'll cover them or not in any of my future math classes

<-- materials engineer, but has interest in all aspects of engineering

 

[A5]

My first circuits book wasn't that great - I'd go with the MIT link posted earlier.

 

[Casawi]

Originally posted by: JohnCU

Originally posted by: Alphathree33
It depends what you mean by "Circuit Theory 1".

My "beginner" circuits course from EE in university is a thousand pages or something... should I recommend that to you?

If this is high school and/or college, you can probably do this online. If it's university (in which case I've never heard of a course called "Circuit Theory"), you're screwed.

Seriously, just go learn this:

-- V = IR.
-- Pick a point in the circuit that you're going to "ground". This point will be zero voltage relative to any other point.
-- Any two resistors in series R1 and R2 can be combined into a single resistor R3 = R1 + R2
-- Any two resistors in parallel R1 and R2 can be combined into a single resistor (1/R3) = (1/R1) + (1/R2)
-- Node analysis (concept: write down an expression for the voltage at every point in the circuit in terms of Vs and Rs)
-- Mesh analysis (concept: write down an expression for the current in every "loop" in the circuit in terms of Is and Rs)

You can Google all of the above concepts and figure it out in a day or two if you have a brain.

If you can't, definitely don't take engineering.

don't forget thevenin's and norton's equivalent

That is pretty much circuits theory... really, if you can master this you get an A. If you fail circuits theory like some of my old classmates... please quit EE.

 

[LongCoolMother]

Originally posted by: JohnCU

Originally posted by: Alphathree33
It depends what you mean by "Circuit Theory 1".

My "beginner" circuits course from EE in university is a thousand pages or something... should I recommend that to you?

If this is high school and/or college, you can probably do this online. If it's university (in which case I've never heard of a course called "Circuit Theory"), you're screwed.

Seriously, just go learn this:

-- V = IR.
-- Pick a point in the circuit that you're going to "ground". This point will be zero voltage relative to any other point.
-- Any two resistors in series R1 and R2 can be combined into a single resistor R3 = R1 + R2
-- Any two resistors in parallel R1 and R2 can be combined into a single resistor (1/R3) = (1/R1) + (1/R2)
-- Node analysis (concept: write down an expression for the voltage at every point in the circuit in terms of Vs and Rs)
-- Mesh analysis (concept: write down an expression for the current in every "loop" in the circuit in terms of Is and Rs)

You can Google all of the above concepts and figure it out in a day or two if you have a brain.

If you can't, definitely don't take engineering.

don't forget thevenin's and norton's equivalent

and phasors.

 

[jaqie]

Just a little tack-on for anyone interested in playing with circuits and microcontroller controls: the adurina plus decimilla board is open source (hardware and software, IIRC) and can be had for ~$20, great to start out with!

 

[Leros]

Originally posted by: jaqie
Just a little tack-on for anyone interested in playing with circuits and microcontroller controls: the adurina plus decimilla board is open source (hardware and software, IIRC) and can be had for ~$20, great to start out with!

I'd say get the Boarduino. Its the same thing as the Decimella, but it pops right into a breadboard.

http://www.adafruit.com/index....in_page=index&cPath=19