8. Simulate and study of DIODE characteristic in terms of temperature dependence.
*STUDY OF DIODE CHARECTERISTIC IN TERMS OF TEMP.
VD 1 0 DC 1V
D1 1 2 D1N914
VX 2 0 DC 0V
.MODEL D1N914 D(IS=3.93E-9 RS=1 BV=100V IBV=5E-6 CJO=1.7PF TT=2NS)
.TEMP 50 100 150
.DC VD 0V 1V 0.01V
.PLOT DC I(VX)
.PROBE
.END
GRAPHICAL ANALYZER:
Special note: In the graph Blue one for 50*c, Red one for 100*c and Green one for 150*c
CONCLUSION: From above characteristic we can conclude that DIODE drop decreases with the temperature i.e. the DIODE current increases with the TEMPERATURE.
9. Study and simulation of CLIPPER CIRCUIT.
PSPICE CODING:
R1 1 2 .22K
D1 0 2 D1N3940
VAC 1 0 SIN(0V 5V 30KHZ)
.MODEL D1N3940 D(IS=4E-10 RS=.105 N=1.48 TT=8E-7 CJO=1.95E-11 VJ=0.4 M=.38 EG=1.36 XTI=-8 KF=0 AF=1 FC=.9 BV=600 IBV=1E-4)
.PROBE
.TRAN 0US 100US
.END
GRAPHICAL ANALYZER:
CONCLUSION: From above graph we can say that clipper circuit clip the negative part of the input signal(voltage) which is lie between -.8v to -5v so circuit is negative clipper circuit.