circuit.c

/* 
 * Date:	March 21st, 2014
 * Author: 	James Earle, 5017843
 * Email: 	je11zi@brocku.ca
 * 
 * COSC 2P91 - Procedural Programming
 * Assign. 2, Section 2: Modelling Electronic Circuits
 * 
 * The program below will read from file and simulate 
 * the effects of a Wheatstone Bridge, outputting the 
 * results of it's arithmetic. 
 * 
 * NOTE: To run this program, the executable must be 
 * associated with the example input file, bridge.txt
 * This should be done via command line in the following
 * manner, 
 * Linux/Unix: 	./circuit < bridge.txt
 * Windows:	circuit.exe < bridge.txt
 * 
 * See example output in circuit_output.txt
 * 	
 */ 
#include <stdio.h>

int main( void )
{
	
	char c;
	float v,r1,r2,r3,r4,r5,i1,i2,i3,i4,i5,
	      v1,v2,v3,v4,v5,p1,p2,p3,p4,p5;
	
	do {
		
		if ( scanf("%f",&v) != 1 ) {
			
			scanf("%c",&c);
			
		} else {
			
			scanf("%f %f %f %f %f",&r1, &r2, &r3, &r4, &r5);
		
			printf("\nV: %f\nR1: %f\nR2: %f\nR3: %f\nR4: %f\nR5: %f",v,r1,r2,r3,r4,r5);
				 
			v1 = v / (1+(r4/r1));
			v2 = v / (1+(r3/r2));
			
			i1 = v1 / r1;
			i2 = v2 / r2;
			
			v5 = v * ((r3/(r3+r2))-(r4/(r4+r1)));
			
			i5 = v5 / r5;
			
			i3 = i2 - i5;
			v3 = i3 * r3;
				
			i4 = i1 + i5;
			v4 = i4 * r4;
			
			p1 = i1 * v1;
			p2 = i2 * v2;
			p3 = i3 * v3;
			p4 = i4 * v4;
			p5 = i5 * v5;
			
			printf("\n\nWheatstone Bridge Data Set \n");
			printf("\nVoltage Applied:\t\t\t\t\t%.4f\tV",v);
			printf("\nTotal current flowing through bridge:\t\t\t%.4f\tA",i5);
			printf("\nTotal power dissipated in the bridge:\t\t\t%.4f\tW",p5);
			printf("\nPercentage of power dissipated by the meter:\t\t%.2f\t%%\n",100 * (p5/(p1+p2+p3+p4+p5)));
			
			printf("\n\t\t\tR1\tR2\tR3\tR4\tR5");
			printf("\nResistance[Ohm]\t\t%.2f\t%.2f\t%.2f\t%.2f\t%.2f",r1,r2,r3,r4,r5);
			printf("\nVoltage[V]\t\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f",v1,v2,v3,v4,v5);
			printf("\nCurrent[A]\t\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f",i1,i2,i3,i4,i5);
			printf("\nPower[W]\t\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\n",p1,p2,p3,p4,p5);
		}
		
	} while ( scanf("%c",&c) == 1 );
	
	return 0;
	
}

gistfile1.txt

james@james-Lenovo-G500:~/Desktop/School/Winter/COSC_2P91/Assign_2$ ./circuit < bridge.txt

V: 1.000000
R1: 120.000000
R2: 1200.000000
R3: 200.000000
R4: 360.000000
R5: 100.000000

Wheatstone Wheatstone Bridge Data Set 

Voltage Applied:						1.0000	V
Total current flowing through bridge:				-0.0061	A
Total power dissipated in the bridge:				0.0037	W
Percentage of power dissipated by the meter:			18.66	%

			R1	R2	R3	R4	R5
Resistance[Ohm]		120.00	1200.00	200.00	360.00	100.00
Voltage[V]		0.2500	0.8571	1.3571	-1.4357	-0.6071
Current[A]		0.0021	0.0007	0.0068	-0.0040	-0.0061
Power[W]		0.0005	0.0006	0.0092	0.0057	0.0037

V: 2.000000
R1: 900.000000
R2: 400.000000
R3: 1000.000000
R4: 360.000000
R5: 500.000000

Wheatstone Wheatstone Bridge Data Set 

Voltage Applied:						2.0000	V
Total current flowing through bridge:				0.0017	A
Total power dissipated in the bridge:				0.0015	W
Percentage of power dissipated by the meter:			17.17	%

			R1	R2	R3	R4	R5
Resistance[Ohm]		900.00	400.00	1000.00	360.00	500.00
Voltage[V]		1.4286	0.5714	-0.2857	1.1886	0.8571
Current[A]		0.0016	0.0014	-0.0003	0.0033	0.0017
Power[W]		0.0023	0.0008	0.0001	0.0039	0.0015

V: 3.000000
R1: 12.000000
R2: 2.000000
R3: 3.000000
R4: 5.000000
R5: 8.000000

Wheatstone Wheatstone Bridge Data Set 

Voltage Applied:						3.0000	V
Total current flowing through bridge:				0.1147	A
Total power dissipated in the bridge:				0.1053	W
Percentage of power dissipated by the meter:			4.52	%

			R1	R2	R3	R4	R5
Resistance[Ohm]		12.00	2.00	3.00	5.00	8.00
Voltage[V]		2.1176	1.2000	1.4559	1.4559	0.9176
Current[A]		0.1765	0.6000	0.4853	0.2912	0.1147
Power[W]		0.3737	0.7200	0.7065	0.4239	0.1053

V: 4.000000
R1: 300.000000
R2: 2000.000000
R3: 600.000000
R4: 1000.000000
R5: 500.000000

Wheatstone Wheatstone Bridge Data Set 

Voltage Applied:						4.0000	V
Total current flowing through bridge:				-0.0043	A
Total power dissipated in the bridge:				0.0093	W
Percentage of power dissipated by the meter:			23.87	%

			R1	R2	R3	R4	R5
Resistance[Ohm]		300.00	2000.00	600.00	1000.00	500.00
Voltage[V]		0.9231	3.0769	3.5077	-1.2308	-2.1538
Current[A]		0.0031	0.0015	0.0058	-0.0012	-0.0043
Power[W]		0.0028	0.0047	0.0205	0.0015	0.0093

V: 5.000000
R1: 18.000000
R2: 7.000000
R3: 14.000000
R4: 9.000000
R5: 10.000000

Wheatstone Wheatstone Bridge Data Set 

Voltage Applied:						5.0000	V
Total current flowing through bridge:				0.1667	A
Total power dissipated in the bridge:				0.2778	W
Percentage of power dissipated by the meter:			11.21	%

			R1	R2	R3	R4	R5
Resistance[Ohm]		18.00	7.00	14.00	9.00	10.00
Voltage[V]		3.3333	1.6667	1.0000	3.1667	1.6667
Current[A]		0.1852	0.2381	0.0714	0.3519	0.1667
Power[W]		0.6173	0.3968	0.0714	1.1142	0.2778
james@james-Lenovo-G500:~/Desktop/School/Winter/COSC_2P91/Assign_2$