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Diffstat (limited to '2459/CH9/EX9.21/Ex9_21.sce')
| -rw-r--r-- | 2459/CH9/EX9.21/Ex9_21.sce | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/2459/CH9/EX9.21/Ex9_21.sce b/2459/CH9/EX9.21/Ex9_21.sce new file mode 100644 index 000000000..8d4c037ef --- /dev/null +++ b/2459/CH9/EX9.21/Ex9_21.sce @@ -0,0 +1,28 @@ +//chapter9 +//example9.21 +//page171 + +Vmax=120 // V +Vmin=80 // V +Vz=50 // V +R_L=10 // kilo ohm +R1=5 // kilo ohm + +// zener diode is on for Vmax and Vmin both since they are > Vz + +// for max Iz + V_R1=Vmax-Vz + I=V_R1/R1 // current through R1 + I_L=Vz/R_L // current through load + // by Kirchoff first law I=I_L+Iz so applying it we get + Iz_max=I-I_L + +// for min Iz + V_R1_dash=Vmin-Vz + I_dash=V_R1_dash/R1// current through R1 + I_L_dash=Vz/R_L // current through load + // by Kirchoff first law I=I_L+Iz so we get + Iz_min=I_dash-I_L_dash + +printf("maximum zener current = %.3f mA \n",Iz_max) +printf("minimum zener current = %.3f mA \n",Iz_min) |