7 files changed, 166 insertions, 0 deletions
diff --git a/2549/CH3/EX3.4.2/Ex3_4_2.sce b/2549/CH3/EX3.4.2/Ex3_4_2.sce
new file mode 100644
index 000000000..46f2a378a
--- /dev/null
+++ b/2549/CH3/EX3.4.2/Ex3_4_2.sce
@@ -0,0 +1,35 @@
+//Ex3.4.2
+//calculation of parameter for half wave rectifier ckt
+clc;
+clear;
+//given
+Rs=5;//resistance of transformer secondary winding
+Rf=50;//forward resistance of diode
+Rl=1000;//load resistance
+N=1/4;//ratio of no. of turns secondary to primary winding (Ns/Np)
+V=240;//input ac voltage
+Vs_rms=N*V;//rms secondary voltage
+Vm=sqrt(2)*Vs_rms;//peak secondary voltage
+Im=Vm/(Rs+Rf+Rl);//peak load current
+Il_dc=Im/%pi;//avg load current
+Vl_dc=Il_dc*Rl;//avg load voltage
+disp('Part(1)');
+disp('Ampere',Il_dc,'Average load Current is :');
+disp('Volt',Vl_dc,'Average load Voltage is :');
+Il_rms=Im/2;//rms load current
+Vl_rms=Il_rms*Rl;//rms load voltage
+disp('Part(2)');
+disp('Ampere',Il_rms,'rms load Current is :');
+disp('Volt',Vl_rms,'rms load Voltage is :');
+Pl_dc=(Il_dc^2)*Rl;//dc load power
+Is_rms=Il_rms;//Is_rms is secondary rms current
+Pac=(Is_rms^2)*(Rs+Rf+Rl);//ac input power
+disp('Part(3)');
+disp('Watt',Pl_dc,'DC load Power is :');
+disp('Watt',Pac,'AC input Power is :');
+n=(Pl_dc/Pac)*100;//rectification efficiency
+disp('Part(4)');
+disp('%',n,'Rectification Efficiency is :')
+TUF=(Pl_dc/(Vs_rms*Is_rms))*100;
+disp('Part(5)')
+disp('%',TUF,'Tranformer Utilization Factor is:')
diff --git a/2549/CH3/EX3.5.2/Ex3_5_2.sce b/2549/CH3/EX3.5.2/Ex3_5_2.sce
new file mode 100644
index 000000000..9d06a4790
--- /dev/null
+++ b/2549/CH3/EX3.5.2/Ex3_5_2.sce
@@ -0,0 +1,27 @@
+//Ex3.5.2
+//calculation of parameter for full wave rectifier ckt
+clc;
+clear;
+//given
+Rs=10;//resistance of transformer secondary winding
+Rf=5;//forward resistance of diode
+Rl=100;//load resistance
+N=1/2;//ratio of no. of turns secondary to primary winding (Ns/Np)
+V=240;//input ac voltage
+Vs_rms=N*V;//rms secondary voltage
+Vm=sqrt(2)*Vs_rms;//peak secondary voltage
+Il_dc=2*Vm/(%pi*(Rs+Rf+Rl));//avg load current
+Vnl=2*Vm/%pi;//avg load voltage at no load
+disp('****Part(1)');
+disp('mA',Il_dc*10^3,'Average load Current is :');
+disp('****Part(2)');
+disp('Volt',Vnl,'Average load Voltage at No Load is :');
+Vfl=Il_dc*Rl;//Average Load Voltage at Full load
+disp('****Part(3)');
+disp('Volt',Vfl,'Average load Voltage at Full Load is :');
+%LR=((Vnl-Vfl)/Vfl)*100;//load regulation
+disp('****Part(4)');
+disp('%',%LR,'% Load Regulation is :');
+n=(8/%pi^2)*(Rl/(Rs+Rf+Rl))*100;//rectification efficiency
+disp('****Part(5)');
+disp('%',n,'Rectification Efficiency is :')
diff --git a/2549/CH3/EX3.5.3/Ex3_5_3.sce b/2549/CH3/EX3.5.3/Ex3_5_3.sce
new file mode 100644
index 000000000..0880dcc01
--- /dev/null
+++ b/2549/CH3/EX3.5.3/Ex3_5_3.sce
@@ -0,0 +1,28 @@
+//Ex3.5.3
+//calculation of parameter for full wave rectifier ckt
+clc;
+clear;
+//given
+Rs=1;//resistance of transformer secondary winding
+Rf=0.5;//forward resistance of diode
+Rl=20;//load resistance
+Il_dc=100*10^-3;//dc current
+Im=(%pi*Il_dc)/2;//peak current
+Vm=Im*(Rs+Rf+Rl);//peak voltage
+Vs_rms=Vm/sqrt(2);//rms secondary voltage
+disp('***Part(1)');
+disp('Volt',Vs_rms,'rms secondary Voltage is :');
+Pl_dc=(Il_dc^2)*Rl;//dc load power
+disp('***Part(2)');
+disp('Watt',Pl_dc,'dc power supplied to Load is :');
+PIV=2*Vm;
+disp('***Part(3)');
+disp('Volt',PIV,'Peak Inverse Voltage of each diode is :');
+Pac=Vm^2/(2*(Rs+Rf+Rl));
+disp('***Part(4)');
+disp('Watt',Pac,'AC Input Power is :');
+n=(Pl_dc/Pac)*100;
+disp('***Part(5)');
+disp('%',n,'Conversion efficiency is :');
+
+
diff --git a/2549/CH3/EX3.5.4/Ex3_5_4.sce b/2549/CH3/EX3.5.4/Ex3_5_4.sce
new file mode 100644
index 000000000..8c3922c78
--- /dev/null
+++ b/2549/CH3/EX3.5.4/Ex3_5_4.sce
@@ -0,0 +1,28 @@
+//Ex3.5.4
+//calculation of parameter for full wave rectifier ckt
+clc;
+clear;
+//given
+Pl_dc=100;// dc load power in watt
+Vl_dc=10;//dc Voltage
+Vs=230;//supply voltage
+Il_dc=Pl_dc/Vl_dc;
+disp('***Part(1)');
+disp('Ampere',Il_dc,'dc load current is :');
+Vm=(%pi*Vl_dc)/2;//peak Voltage
+Vs_rms=Vm/sqrt(2);//rms secondary voltage
+disp('***Part(2)');
+disp('Volt',Vs_rms,'rms secondary Voltage is :');
+Im=(Il_dc*%pi)/2;//peak current
+Is_rms=Im/sqrt(2);
+disp('***Part(3)');
+disp('Watt',Is_rms,'rms secondary current is :');
+TUF=Pl_dc/(Is_rms*Vs_rms)*100;
+disp('***Part(4)');
+disp('%',TUF,'Transformer Utilization Factor is :');
+n=Vs/Vs_rms;//n=N1/N2 turns ratio primary to secondary
+disp('***Part(5)');
+disp('Watt',n,'Turns ratio is :');
+
+
+
diff --git a/2549/CH3/EX3.5.5/Ex3_5_5.sce b/2549/CH3/EX3.5.5/Ex3_5_5.sce
new file mode 100644
index 000000000..7bb865f77
--- /dev/null
+++ b/2549/CH3/EX3.5.5/Ex3_5_5.sce
@@ -0,0 +1,14 @@
+//Ex3.5.5
+//calculation of necessary ac input power for HWR and FWR
+clc;
+clear;
+//given
+Pl_dc=500;//dc load power
+n_HWR=0.4;//efficiency for half wave rectifier
+n_FWR=0.812// efficiency for full wave rectifier
+Pac_HWR=Pl_dc/n_HWR;
+disp('**** half wave rectifier ****')
+disp('Watt',Pac_HWR,'necessary ac input power is :')
+Pac_FWR=Pl_dc/n_FWR;
+disp('**** full wave rectifier ****')
+disp('Watt',Pac_FWR,'necessary ac input power is :')
diff --git a/2549/CH3/EX3.6.1/Ex3_6_1.sce b/2549/CH3/EX3.6.1/Ex3_6_1.sce
new file mode 100644
index 000000000..01e7ec979
--- /dev/null
+++ b/2549/CH3/EX3.6.1/Ex3_6_1.sce
@@ -0,0 +1,11 @@
+//Ex3.6.1
+//calculation of average load voltge bridge rectifier ckt
+clc;
+clear;
+//given
+N=1/2;//ratio of no. of turns secondary to primary winding (Ns/Np)
+V=230;//input ac voltage
+Vs_rms=N*V;//rms secondary voltage
+Vm=sqrt(2)*Vs_rms;//peak secondary voltage
+Vl_dc=(1/%pi)*integrate('(Vm-1.4)*sin(Wt)','Wt',0,%pi);//(Vm-1.4) (voltage drop across two diode by 1.4V)
+disp('Volt',Vl_dc,'Average load voltage is :')
diff --git a/2549/CH3/EX3.6.3/Ex3_6_3.sce b/2549/CH3/EX3.6.3/Ex3_6_3.sce
new file mode 100644
index 000000000..2ce3f7524
--- /dev/null
+++ b/2549/CH3/EX3.6.3/Ex3_6_3.sce
@@ -0,0 +1,23 @@
+//Ex3.6.3
+//calculation of parameter for bridge rectifier ckt
+clc;
+clear;
+//given
+N=1/4;//ratio of no. of turns secondary to primary winding (Ns/Np)
+V=220;//input ac voltage
+f=50;// frequency
+Rl=10^3;//load resistance
+Vs_rms=N*V;//rms secondary voltage
+Vm=sqrt(2)*Vs_rms;//peak secondary voltage
+Vl_dc=2*Vm/%pi;//avg output voltage
+disp('***Part(1)***');
+disp('Volt',Vl_dc,'Average output Voltage is :');
+Pl_dc=Vl_dc^2/Rl;//dc load power
+disp('***Part(2)***');
+disp('Watt',Pl_dc,'DC load Power is :');
+PIV=Vm;
+disp('***Part(3)***');
+disp('Volts',PIV,'Peak Inverse Voltage is :');
+f0=2*50; 
+disp('***Part(4)***');
+disp('Hz',f0,'Output frequency is :')