80 In Fig. ll2 the ideal diode is at its conduction point when the voltage at point B with respect to G is which of the following? (1) +9.9v8 * rgl+ 10.0v (5)+ 10.1V (4)-10.0v (6)-10.1V R f Fig.Il2 3. Thec ircuiti n Fig. 113(a)is a diodec lipperT. hei nputw aveformis a sine wave that has a maximum voltage of 10 V. The output waveform will be ass hownin whicho f thep artso f Fig. 113? (1) (b) (2) (c) (3) (d) (4) (e) L,, -5 -to (2) -e.ev8 .t:,n’n-r–,rl /”!”o*1 o1-rr–ql l-J -‘;{ (b) (t +10 (o) Dlode clipper Eout {-o+;s,–,ovl .X tct “o’fi{lnh _,ol u l { e } Fig. 113
81 +lov -tov Fig. 114 4. The input voltagew aveformi n Fig. 114i s as shown.A ssumingid eal diodest,h eo utputw aveformw ill bea ss hownin whichp arto f thef igure? (1) (a) (2) (b) (3) (c) (4) (d) 5. Assuming the diodes of Fig. 114 have a barrier potential of 0.8 Y what will be the positive and negative maximum values for the output signal? (1) +12.8Y-1 0.8V (2) +12.8V -9.2V (3)+ 11.2V-1 0.8V (4)+ 11.2Y-,9 .2V 6. In Fig. 115(a), the diode clipper circuit has a composite input: a bias battery of 20 V acts in series with a sawtooth-waveform voltage with a maximum positive and negative excursion of 40 V. The output waveform is as shown in which part of Fig. i 15? (1) (b) (2) (c) (3) (d) 7. In Fig. 116, the diode is (1) in the conducting state. (2) n the nonconducting state. (3) at the transition (conduction) point.
82 -i’t] A .u”v-1lr Eoul ;J,n-r ,:f#_l_ (b) In Fig. 116, if E64 werec hangedt o _15V what would be the value of current flowing through the diode? (1) 0 mA rzis me (3) t0 mA G) 20 ^o (Hint’ Fig’ 39) 1l O* 116’w henE ce= -15 v whati s the vortage at rhea nodeo f the diodew ith respectto thec athode? (t)-r2v rz-j zi (3)0 v [fr’:;Idea] diode!)+rzv (o) DioOe chpper circuit with corposiie input Fig. 115 il6 RL.?OOOn Fig. 8. 9.
ideol diode 83 I=3O Fig. 117 10. In Fig. (l) Yes117, is the diode conductins? (3) The diode is at the transition point. 1 1. In Fig. 1 18, find the value of V6a when the…