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Diffstat (limited to '2459/CH20/EX20.5/Ex20_5.sce')
| -rw-r--r-- | 2459/CH20/EX20.5/Ex20_5.sce | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/2459/CH20/EX20.5/Ex20_5.sce b/2459/CH20/EX20.5/Ex20_5.sce new file mode 100644 index 000000000..f9f400065 --- /dev/null +++ b/2459/CH20/EX20.5/Ex20_5.sce @@ -0,0 +1,27 @@ +//chapter20
+//example20.5
+//page441
+
+Vin=24 // V
+Vout=12 // V
+Rs=160 // ohm
+Rl_min=200 // ohm
+
+Is=(Vin-Vout)/Rs // in ampere
+
+// minimum load occurs when Rl tends to infinity so
+Il_min=0
+
+// maximum load occurs when Rl=200 ohm
+Il_max=Vout/Rl_min // in ampere
+
+Iz_min=Is-Il_max // in ampere
+Iz_max=Is-Il_min // in ampere
+
+printf("current through series reistance = %.3f mA \n \n",Is*1000)
+printf("minimum load current = %.3f mA \n",Il_min*1000)
+printf("maximum load current = %.3f mA \n",Il_max*1000)
+printf("minimum zener current = %.3f mA \n",Iz_min*1000)
+printf("maximum zener current = %.3f mA \n \n",Iz_max*1000)
+
+printf("comment : current Is through Rs is constant.\nAs load current increases from 0 to 60 mA, zener current decreases from 75 to 15 mA, \nmaintaining Is constant.\nThis is the normal operation of zener regulator \ni.e.Is and Vout remain constant inspite of changes in load or source voltage.")
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