Analog circuit simulator - Simulates circuits with: resistors, capacitors, coils, op-amps, and voltage sources.
Input:
An N*4 matrix
called: "CIR" with the circuit description. Each line in the
matrix contains one component.
Column 1 in the
matrix indicates the type of
component (1 to 5), column 2, 3, 4 indicates the value and / or the
node numbers of the component.
| Resistor: | 1, value, node1, node2 |
| Coil: | 2, value, node1, node2 |
| Capacitor: | 3, value, node1, node2 |
| Op-amp: | 4, node-output, node-input+, node-input- |
| Voltage source: | 5, value, output+, output- |
The order of the
components in the input matrix is: resistors, coils,
capacitors, op-amps, voltage sources.
The Output- of all the op-amps are connected to node 0.
Usage:
After starting A-sim the following menu appears:
Fill in all the
values that are necessary, and press R/S.
The result is an
Nx1 matrix.
On row 1 the
voltage of node 1 is displayed, on row 2 the voltage of node 2 is
displayed, and so on.
If there are coils
and / or capacitors in the circuit, the result is a complex matrix.
If there are extra voltage sources in the circuit, then for each voltage source an extra row in the output is added which contain unusable data.
Known bugs /
limitations:
It is not allowed for an op-amp output to be the highest node number in the circuit.
Example 1:
Input matrix ("CIR"):
|
1 |
100 |
1 |
2 |
|
1 |
200 |
2 |
0 |
|
1 |
300 |
3 |
4 |
|
1 |
400 |
4 |
0 |
|
1 |
500 |
3 |
5 |
|
1 |
600 |
5 |
0 |
|
1 |
700 |
6 |
7 |
|
1 |
800 |
7 |
0 |
|
1 |
900 |
6 |
8 |
|
1 |
1000 |
8 |
9 |
|
4 |
3 |
2 |
4 |
|
4 |
6 |
5 |
7 |
|
5 |
20 |
9 |
0 |
U_IN: 10V,
W: 0
Gain: 1000000
Result matrix:
|
10 |
|
6.6667 |
|
11.6666 |
|
6.6667 |
|
6.3636 |
|
11.9318 |
|
6.3636 |
|
15.7536 |
|
20 |
|
0.0045 |
Node 1: 10V
Node 2: 6.6667 V
And so on.
Example 2:
Input matrix ("CIR"):
|
1 |
1000 |
1 |
2 |
|
3 |
1E-9 |
2 |
0 |
U_IN: 10V,
W: 628318.5307 (100000 kHz * 2 * Pi)
Gain: 0
Result matrix:
|
10.00 i 0.00 |
|
7.1696 i –4.5048 |
Node 1: 10V
Node 2: 7.1696 i –4.5048V
Revision history:
9th of November 2004 - Replaced line 68 RCLx "J" with 68
-1, 69 SQRT, 70 x
