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+// find peak output voltage and frequency
+// Electronic Principles
+// By Albert Malvino , David Bates
+// Seventh Edition
+// The McGraw-Hill Companies
+// Example 15-5, page 532
+
+clear; clc; close;
+
+// Given data
+R1=900;// from the figure in ohms
+R2=100;// from the figure in ohms
+Vgt=1 ;// gate trigger voltage in volts
+Igt=200*10^-6;// gate trigger current in amperes
+C=0.2*10^-6;// capacitance in faraday
+R=50;// thevenin resistance facing the capacitance when the SCR is off
+
+// Calculations
+Rth=R1*R2/(R1+R2);// thevenin resistance
+Rg=Rth;// in ohms 
+Vin=Vgt + (Igt*Rg);// input voltage in volts
+Vpeak=10*Vin;// because of 10:1 voltage divider, the output voltage is 10(Vin)
+T=0.2*R*C ;// period of sawtooth is 20% of time constant in seconds
+f=1/T;// frequency in Hertz
+disp("Volts",Vpeak,"Peak output voltage=")
+disp("hertz",f,"frequency=")
+
+// Results
+// Peak output voltage is 10.1 Volts
+// Frequency is 50 KHertz
+\ No newline at end of file
diff --git a/317/CH15/EX15.5/example5.txt b/317/CH15/EX15.5/example5.txt
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+Peak output voltage is 10.1 Volts
+Frequency is 50 KHertz
+\ No newline at end of file