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+// Design of Triggering Circuit for a UJT
+// Basic Electronics
+// By Debashis De
+// First Edition, 2010
+// Dorling Kindersley Pvt. Ltd. India
+// Example 8-10 in page 390
+
+clear; clc; close;
+
+// Given Data
+Vs=30; // DC source voltage in V
+eta=0.51; // Intrinsic stand off ratio
+Ip=10*10^-6; // Peak Emitter current of UJT in mu-A
+Vv=3.5; // Valley voltage in V
+Iv=10*10^-3; // Valley current in A
+f=60; // Source frequency in Hz
+tg=50*10^-6; // width of triggering pulse in seconds
+C=0.5*10^-6; // Assumption for circuit Capacitance in mu-F
+Vd=0.5; // Fixed value of Vb in V
+
+// Calculations
+Vp=(eta*Vs)+Vd;
+Rlow=(Vs-Vp)/Ip; 
+Rup=(Vs-Vv)/Iv;
+tou=1/f;
+R=(tou/C)*(1/log(1/(1-eta))); 
+Rb1=tg/C; 
+Rb2=10^4/(eta*Vs); 
+
+printf("(a)The value of Base-1 Resistance of UJT is %0.2f ohm \n",Rb1);
+printf("(b)The value of Base-2 Resistance of UJT is %0.2f ohm \n",Rb2);
+printf("(c)Circuit resistance of the arrangement is %0.2e ohm \n",R);
+
+// Results
+// (a) The value of Base-1 Resistance of UJT is 100 ohm
+// (b) The value of Base-2 Resistance of UJT is 654 ohm
+// (c) Circuit resistance of the arrangement is 46.7 K-ohm
+\ No newline at end of file
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+(a)The value of Base-1 Resistance of UJT is 100.00 ohm 
+(b)The value of Base-2 Resistance of UJT is 653.59 ohm 
+(c)Circuit resistance of the arrangement is 4.67e+004 ohm 
+ 
+\ No newline at end of file