Question

1. Explain in your own words how to experimentally find the Thevenin Equivalent of a circuit 2. Given RL = 1K where N is a circuit of resistors and voltages. Can Rtell whether it is connected to N or N's Thevenin Equivalent? How? 3. Given Find and draw the Thevenin Equivalent if Voc = 2 volts and Ry + R2 = 10K 4. Given R = IKS Find and draw the Thevenin Equivalent of N if V. = 3 volts when the resistor is connected and the voltage acroSSS N when RL is removed is 5 volts.

Answer 1

1) Calculating Therew'n equivalent First find the equivaleut resistance by cremoving the load resistance RL and replacing the sources by their internal resistances i e, Volhaige source by short circuit and current source by open circuit , for example conside the below circuit R, = 162 R2 162 . ER = 260 ER=IKR IK R removing Zak Rth. s shortina lov 3 1.66k 0.60k} 0.66K3 Rth Rth ² fRth = 1.66k.) Frth = 1.6 Now find the the venin vollage by removing Ri 3,20 R2 1K th low @ n R K the the other current flows terminal of R₂ is open no so I = 10 OY 38.3 mA Iktak

the voltage te is the vollage of the resistor Nth = TR3 = (9K3 (3.3mA) Vith. 6.60 get Thus we the Thevenin equivalent No look 1.66k Raikan 2) Given ERL=lk RL cannot give any information regarding the number of resistors present in the circuit. As R is the independent vesistor used at the end of the circuit to check the output voltage / current based on the requirement. Even if the ķ value changes the 4th & Rth doesn't nary

3) Given Ri NT & lov 0 6 R2 Voc given R, R2 = 10ks 10 IMA - ritroToks R. Noc 2 = 262 Ima R OKOK ESKA In order to find the the venin equivalent dresistance short the or supply WT [ Zak Rth KX8C = 1.6km Rth = 2x+8K us as shown The Thevenin renin Equivalent circuit Equivalent below As voc is the voltage when the R Cload) is removed and the source 1or is connected

ALERA 4) Given IK Z RL ML K & R V2=37 when Ę is removed V = 5V => to current flows to the ilp volhage is equal to the output voltage so N=5v L RL BV Ал доме шҮҮu flows in the circuit IK SV - Ři - 3m A the resistor R 2:16KA 3m GAL The The venin Equivalent circuit is as choon below 1.6k EREIKR NL ) 5v

IN € 1th = -5v, Rth=uk UK I = V Rat R 1 - 5 14+2k - -= 0.833.10A = 833 A . V - IRL = (0.833 mA) lek) Tv = 1.66V1