Week-1 NPTEL-Analog Electronic Circuits- PMRF Live session-1(July 2024) TA Arpit Bal

[@ajaypalsinghsidhu1458]

Hi Sir Sir i have doubt in calculation of Ques 1 in Assignment 1 How 958.2827 value is calculated??

[@arpitbal_TA]

@@ajaypalsinghsidhu1458 In the solutions I think VT*ln(Id/Is)

[@sanjay-nf5ub]

sir how did vd(peak) =Vs*rd/(rd+R) equation of problem 7 arrive.

[@arpitbal_TA]

@@sanjay-nf5ub Rd is the small signal resistance of diode. So by voltage division, the voltage across the diode results in that formula.

[@sanjay-nf5ub]

@@arpitbal_TA can u simplify and show how u derived it.

[@arpitbal_TA]

@@sanjay-nf5ub it comes from basic ohm's law. Refer to this www.elprocus.com/voltage-divider-rule-with-examples/

[@ajaypalsinghsidhu1458]

For Solving we should prefer log or ln??

[@arpitbal_TA]

@@ajaypalsinghsidhu1458 check the actual current equation (refer to the week1 live session+ lecture), it uses exponential. This should answer your question.

[@ajaypalsinghsidhu1458]

​@@arpitbal_TA elaborating my ques when we have an exponential term we should prefer log or ln to solve?

[@arpitbal_TA]

@@ajaypalsinghsidhu1458 the inverse of exp is ln . If you're not clear with exponential functions and log, check this: virtualnerd.com/worksheetHelper.php?tutID=Alg2_08_01_0008