Circuits 6.1 / Bode 1.1
2018-04-08
This is a program capable of solving RLC circuits and Transfer functions/ Bode plots.
If you find any bugs, send an e-mail to me (yago.t.mello@gmail.com).

First use:
1- Place the files (circuits, specfunc and utils) in mylib folder
2- Refresh your libraries (Doc + 6).

To run circuits:
3- Press the book symbol (below del)
4- Press 6
5- Open circuits folder and click on nod5
6- Run nod5 without ANY arguments
7- You should describe yout circuit branch by branch. The program uses SI units.
8- You can add as many components as you want in a branch (source, resistor, capacitor, inductor, ...), and as many branches as you want in a node.
9- Every node has a number, 0 is GND. DO NOT SKIP NODES (eg. leave node 2 empty while using node 3).
10-When you are done adding branches, press esc in the Node A selection to run the program. If you press esc in other part, the program will quit and no calculation will be done,
11-Select which nodes you want to return to time domain. [a]ll, [s]ome or [n]one.
12-The program will display the time domain result, and return Circuit<n>_t and Circuit<n>_s matrices. The matrices dim. are <number of nodes> x 1. The first line (a11) is node 1, the second (a21) is node 2, ...
13-The _s stands for s domain. _t stands for time domain.
14-The program will automatically store results in new matrices every time it finishes successfully.
15-To free a name simply delete the variable (delvar name). Both circuit<n>_t and circuit<n>_s should be deleted.

Example of a simple charging RC circuit:

          ______/\  /\  /\____   <== Node 1
   ___|___        \/  \/      __|__
vs   ___              r         --------   c
         |______________|
       _|_
        --    gnd

1- Run nod5()
2- describing the upper branch from node 1 to gnd
	Node A = 1
    	Node B = 0
    	Voltage source = vs
	Current source = 0
	Resistance = r
	Capacitance = 0
	Ind. = 0
3- press enter (x2)
4- describing the left branch, from node 1 to gnd
	Node A = 1
	Node B = 0
	Voltage source = 0
	Current source = 0
	Resistance = 0
	Capacitance c
	V0 cap. = 0
	Ind = 0
5- press enter (x2)
6- press esc
7- press enter (x2)

9- the matrix shown is the voltage on node 1
10- you can access this matrix in the Var menu, it's name is circuit01_t.

To run bode:
3- Press the book symbol (below del)
4- Press 6
5- Open circuits folder and click on bode
6- Run bode without ANY arguments
7- Press Var and select circuit<>_tf or bode<>_mag or bode<>_pha
8- To make your bode plot, first do bode<>_mag[<>,<>], then g(w):=Ans. Go to ploting window, and put g(10^x). Your graph will be a bode plot with the X axis being the power of 10 of the frequency. The Y axis will be in dB.
9- Press Menu -> 4 -> 1 and set xmin to 0, adjust the axis to fit your needs.

FAQ:

Q: Can it solve nonlinear circuits?
A: No. Still working on it.

Q: How many nodes can I insert?
A: I don't know, probably a lot.

Q: Does it accept sin, cos, polynomials, ...?
A: Yes. The variable must be t ( eg. A*sin(30*t) )

Q: Can I use a variable instead of a number?
A: Yes.