I i3ill New Member Dec 7, 2008 #1 Does anybody know the proper way to use thevinin analysis to find VTH and RTH for the followin circuit with R4 considered to be the load. What is the voltage across and current through the load?**broken link removed**
Does anybody know the proper way to use thevinin analysis to find VTH and RTH for the followin circuit with R4 considered to be the load. What is the voltage across and current through the load?**broken link removed**
ParkingLotLust Member Dec 7, 2008 #2 Rth is found by opening R4 (load) and shorting V1. Simply calculate the value of R2 and R3 in parallel, then add the resistance of R1 Vth is found by using the voltage divider rule - 20v splis between R2 and R3, and Vth splits between R3 and R4 Then, use Ohm's Law to find the current through the load We did this at the beginning of the year, so I apologise if Im a bit hazy Last edited: Dec 7, 2008
Rth is found by opening R4 (load) and shorting V1. Simply calculate the value of R2 and R3 in parallel, then add the resistance of R1 Vth is found by using the voltage divider rule - 20v splis between R2 and R3, and Vth splits between R3 and R4 Then, use Ohm's Law to find the current through the load We did this at the beginning of the year, so I apologise if Im a bit hazy
U Ubergeek63 Well-Known Member Dec 7, 2008 #3 what's with the high school electronics question? Same as anything else: open circuit voltage and source shorted source resistance.
what's with the high school electronics question? Same as anything else: open circuit voltage and source shorted source resistance.
Roff Well-Known Member Dec 7, 2008 #4 ParkingLotLust said: Rth is found by opening R4 (load) and shorting V1. Simply calculate the value of R2 and R3 in parallel, then add the resistance of R1 Click to expand... No, Rth is R1, R2, and R3 in parallel. Vth is found by using the voltage divider rule - 20v splis between R2 and R3, and Vth splits between R3 and R4 Click to expand... No, Vth is the voltage across R4 when R4 is open-circuit. Vth=V1(R2||R3)/(R1+(R2||R3)) Then, use Ohm's Law to find the current through the load We did this at the beginning of the year, so I apologise if Im a bit hazy Click to expand...
ParkingLotLust said: Rth is found by opening R4 (load) and shorting V1. Simply calculate the value of R2 and R3 in parallel, then add the resistance of R1 Click to expand... No, Rth is R1, R2, and R3 in parallel. Vth is found by using the voltage divider rule - 20v splis between R2 and R3, and Vth splits between R3 and R4 Click to expand... No, Vth is the voltage across R4 when R4 is open-circuit. Vth=V1(R2||R3)/(R1+(R2||R3)) Then, use Ohm's Law to find the current through the load We did this at the beginning of the year, so I apologise if Im a bit hazy Click to expand...
ParkingLotLust Member Dec 7, 2008 #5 Roff said: No, Rth is R1, R2, and R3 in parallel. Click to expand... Completely missed that one