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Diffstat (limited to '3507/CH9/EX9.23/Ex9_23.sce')
| -rw-r--r-- | 3507/CH9/EX9.23/Ex9_23.sce | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/3507/CH9/EX9.23/Ex9_23.sce b/3507/CH9/EX9.23/Ex9_23.sce new file mode 100644 index 000000000..3bdcdc0e0 --- /dev/null +++ b/3507/CH9/EX9.23/Ex9_23.sce @@ -0,0 +1,21 @@ +//chapter9
+//example9.23
+//page172
+
+Ei=22 // V
+Vz=18 // V
+Rl=18 // ohm
+Eo=Vz
+Iz_min=200d-3 // A
+
+// Zener current will be min when input voltage is min
+
+// load current is
+Il_max=Vz/Rl
+
+// we see that R=(Ei-Eo)/(Iz-Il) and minimum Iz occurs when Il is maximum so
+R=(Ei-Eo)/(Iz_min+Il_max)
+
+printf("required series resistance = %.3f ohm \n",R)
+
+// on inserting this series resistance the output voltage will remain constant at 18 V
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