Electrical Circuits 1 by SMJ IE UPB
Version 1.5
1. Presentation:
The objetive of this library is to serve as a didactic tool in the wide field of circuit related software. The program is able of simulate resistive circuits of direct current using the node's voltages method.
2. Content:
ce1smj.htm: | Spanish Document. | ||
ce1smje.htm: | This Document. | ||
ce1v15.bin: | Romid: 1000 | Checksum: #E969h | Bytes: 12105.5 |
fchoose.bin: | Romid: 1657 | Checksum: #A5A4h | Bytes: 2480.5 |
3. Instructions:
Execute the one and only comand of the library, CE1, and the next window will appear:
Press any key and the following window will appear:
Nuevo: This option is always present. Press the ENTER or OK key on this option if you want to begin a new circuit.
If output files of CE1 exist in the current path, they'll appear in this window, that' s the case of Parcial.CE1. If the ENTER or OK key is pressed on this options the file will be open for appending and solving.
If CANCL is pressed the program will reach its end. Else this window will appear:
In this window the following keys are functional; pressing another key will make your HP beep (If flag 56 is set).
a. The arrows:
Right Change.
They are able of moving the cursor in the screen. If you combine them with the right change they'll act like in the PICTURE enviroment.
b. A, B, C and D keys:
By pressing one of this keys the following window will appear:
In this moment the program will wait until you enter the direction of the element by using the arrows. If the B key was pressed, the conductor will be puted inmediatly; else the following windows will appear depending of the pressed key:
A key.
C key.
D key.
A few words about the power sources. In Voltage sources the positive terminal is puted first and the negative terminal is puted last. In Current sources the terminal where the current leave the node is putted first and the terminal where the current arrive the node is putted last. The conductors are taken as nodes.
c. F key:
If you press this key the program will end up without giving the oportunity of saving changes.
d. + ON:
By pressing this combination the HP will turn off.
e. E key:
When the circuit is ready and you want to solve it, this is the key you need to press. If you press this key when nothing has been introduced (Or a single conductor) the followiing window will appear:
Else, the following window will appear. This window give you the oportunity of saving the circuit. If you choose the CANCL option the program will end up and the circuit will be lost.
If you choose the "Si" option the following window will appear:
Press the ENTER key when you had finished entering the name of the circuit. The following window will appear then:
Press the ENTER key over the node that you want to use as reference (Ground node). If incoherent parts are present in the circuit; like short circuited voltage sources, losten current sources, etc... the following window will appear:
Else, the following window will appear:
Main window.
In this window you have five options:
1) Dibujo del circuito: Press the ENTER key over this option in order to see the circuit drawing.
2) Voltaje en los nodos: Press the ENTER key over this option in order to see the voltage of the nodes relative to the reference that you choose.
If the ENTER key is pressed over one of this options the right window will appear. Press the ENTER key and you'll be back in the previous window. Finally, press the CANCL key and you'll be back in the main window.
3) Resistencia.Nunbre:InitialNode-FinalNode Value in W: Press the ENTER key on this option and the following window will appear where the current direction and voltage polarity are shown in the drawing.
4) FuenteV or I.Positive or LeavingNode-Negative or ArrivingNode Value in Volt. or Amp.: Press the ENTER key on this option and you'll see the right window where the current direction and voltage polarity are shown in the drawing.
Note: Remember that a minus sign on this windows is simply telling you that the real direction is contrary to the one shown in the drawing.
5) Equivalente Thevenin: Press the ENTER key on this option in order to calculate Thevenin's equivalent circuit between any two given nodes.
Once you have entered the nodes, press the ENTER key and the following window will appear:
Norton's equivalent circuit calculations aren't included because they're to easyly made if you use Thevenin as an starting point (Perform a surce change if Thevenin's resistance is non-zero). Press the ENTER key and you'll be back in the main window.
Finally, press the CANCL key in the main window and the program will reach its end.
4. Conclusion:
At the end, I wish to
thank Joe Horns Goodies Disk number 11 for the fchoose software
that I use to substitute the CHOOSE comand of UsrRPL. I'll be
waiting for your comentaries in my . As an aditional information I
would like to say that this isn't the final versión of this
software, because even though is mostly made in SysRPL (90%) its
still depends of some slow UrsRPL comands as RREF. I'm also
thinking about the implementation of controled power sources and
trasient analisis on RLC circuits, fasorial analysis in stable
state... but all this things will have to wait until I learn
Numeric Calculus and Electrical Circuits II
Thank you for the given atention.
Santiago Mesa Jaramillo.
Electrical Engineering Student.
Universidad Pontificia Bolivariana, Medellín-Colombia.