Oct 30

Practice 2

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Practice 2 is uploaded

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  • 1/Be accurate when you deal with load-line analysis. 2/ Check the value of the voltage source and the direction of the current in both series and parallel configuration. 3/ In case of reverse bias : Vd= E and Vr=0 , but if there are two diodes are series in different directions ( Example 2.8) , the reversed one = E , and the forward will be zero. 4/Be careful with directions 5/In parallel : same type , same direction = Both on or both off same type , Different direction = when the direction of the current of circuit is the same of one diode ( on ) and the other ( off). Different type , same direction = The one with lowest Vk ( on ) , the other ( off) . 6/ Full-wave biased rectifier, using silicone instead of ideal , there will be a small area in between each wave + you should consider this voltage while talking about (on - off conditions) ( see our quiz ) 7/ There is no cut in series clippers, while in parallel biased clippers there is ( check slide 50 and 51) 8/ You know clampers by seeing the capacitor. 9/ In clampers, start when the diode is on --->find Vo -----> find the charge in capacitor ----> change polarity of Vi -------> find Vo 10/ Zener works in reverse bias 11/When Vi> Vz , zener is on otherwise it is open circuit. 12/ You can find VL by voltage divider rule , check if it is > Vz Yes: VL = Vz No: VL= VL , the zener is off
  • 1/ Vt is in the range of 0.02- 0.04V 2/ In reverse bias : The resistance increases when the current increases as the depletion region becomes bigger ( R in Mega, I in micro or nano) 3/ In forward bias : The resistance decreases when the current increases as the depletion region becomes smaller ( R in ohms , I in mili) 4/ You have only six equations : Id , Vt, Rdc, rac( two equations), rav. 5/ Please make sure that you know how to draw each model characteristics graph
  • I have uploaded Practice 1 here
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