6 files changed, 97 insertions, 0 deletions
diff --git a/3754/CH32/EX32.12/32_12.sce b/3754/CH32/EX32.12/32_12.sce
new file mode 100644
index 000000000..ef2594e91
--- /dev/null
+++ b/3754/CH32/EX32.12/32_12.sce
@@ -0,0 +1,19 @@
+clear//
+
+//Variables
+
+f = 50.0 * 10**3               //Frequency (in Hertz)
+duty_cycle = 0.6               //Duty cycle
+C = 0.0022 * 10**-6            //Capacitance (in Farad)             
+
+//Calculation
+
+T = 1/f                        //Time period (in seconds)
+t1 = duty_cycle * T            //time interval1 (in seconds)
+t2 = T - t1                    //time interval2 (in seconds)
+R2 = t2 / (0.7 * C )           //Resistance (in ohm)  
+R1 = t1 / (0.7 * C) - R2       //Resistance (in ohm) 
+
+//Result
+
+printf("\n Time period is  %0.3f ms.\nt1 is  %0.3f  ms.\nt2 is  %0.3f  ms.\nR2 is  %0.2f  kilo-ohm.\nR1 is  %0.1f  kilo-ohm.",T*10**3,t1*10**3,t2*10**3,R2*10**-3,R1*10**-3)
diff --git a/3754/CH32/EX32.2/32_2.sce b/3754/CH32/EX32.2/32_2.sce
new file mode 100644
index 000000000..1276301aa
--- /dev/null
+++ b/3754/CH32/EX32.2/32_2.sce
@@ -0,0 +1,14 @@
+clear//
+
+//Variables
+
+R1=20.0*10**3;R2=20.0*10**3;R=20.0*10**3;
+C1=100.0*10**-12;C2=100.0*10**-12;C=100.0*10**-12;
+
+//Calculation
+
+f = 1/(1.38 * R * C)                    //Frequency (in Hertz) 
+
+//Result
+
+printf("\n Frequency of oscillation is  %0.0f  kHz.",f * 10**-3)
diff --git a/3754/CH32/EX32.3/32_3.sce b/3754/CH32/EX32.3/32_3.sce
new file mode 100644
index 000000000..c54c2f673
--- /dev/null
+++ b/3754/CH32/EX32.3/32_3.sce
@@ -0,0 +1,17 @@
+clear//
+
+//Variables
+
+R1 = 2.0 * 10**3         //Resistance (in ohm)
+R2 = 20.0 * 10**3        //Resistance (in ohm)
+C1 = 0.01 * 10**-6       //Capacitance (in Farad)
+C2 = 0.05 * 10**-6       //Capacitance (in Farad)
+
+//Calculation
+
+T = 0.69*(R1*C1 + R2*C2) //Time periode of oscillation (in seconds)
+f = 1/T                  //Frequency of oscillation (in Hertz)
+
+//Result
+
+printf("\n Time period of oscillation is  %0.1f  ms.\nFrequency of oscillation is  %0.2f  kHz.",T*10**3,f*10**-3)
diff --git a/3754/CH32/EX32.4/32_4.sce b/3754/CH32/EX32.4/32_4.sce
new file mode 100644
index 000000000..411fb0042
--- /dev/null
+++ b/3754/CH32/EX32.4/32_4.sce
@@ -0,0 +1,18 @@
+clear//
+
+//Variables
+
+T1 = 1.0 * 10**-6                //Pulse width (in seconds)
+f = 100.0 * 10**3                //Frequency (in Hertz)
+R1=10.0*10**3;R2=10.0*10**3;
+
+//Calculation
+
+T = 1/f                          //Time period of oscillation (in seconds) 
+C1 = T1 / 0.69 / R1              //Capacitance (in Farad)
+T2 = T - T1                      //Time period (in seconds) 
+C2 = T2 / 0.69 / R2              //Capacitance (in Farad)
+
+//Result
+
+printf("\n Value of C1 capacitor is  %0.0f  pico-Farad.\nValue of C2 capacitor is  %0.0f  pico-Farad.",C1*10**12,C2*10**12)
diff --git a/3754/CH32/EX32.8/32_8.sce b/3754/CH32/EX32.8/32_8.sce
new file mode 100644
index 000000000..ab0a54cc8
--- /dev/null
+++ b/3754/CH32/EX32.8/32_8.sce
@@ -0,0 +1,14 @@
+clear//
+
+//Variables
+
+R1 = 2.2 * 10**3                     //Resistance (in ohm)
+C1 = 0.01 * 10**-6                   //Capacitance (in Farad)
+
+//Calculation
+
+tp = 1.1 * R1 * C1                   //Pulse width (in seconds)
+
+//Result
+
+printf("\n The pulse width is  %0.3f  micro-second.",tp * 10**6)
diff --git a/3754/CH32/EX32.9/32_9.sce b/3754/CH32/EX32.9/32_9.sce
new file mode 100644
index 000000000..5937b81f2
--- /dev/null
+++ b/3754/CH32/EX32.9/32_9.sce
@@ -0,0 +1,15 @@
+clear//
+
+//Variables
+
+C = 1000.0 * 10**-12             //Capacitance (in Farad) 
+tp = 10.0 * 10**-6               //Pulse width (in seconds)
+T = 60.0 * 10**-6                //time period (in seconds) 
+
+//Calculation
+
+R1 = tp / (1.1 * C)              //Resistance (in ohm)               
+
+//Result
+
+printf("\n Resistance required is  %0.2f  kilo-ohm.",R1 * 10**-3)