Can you me with this thevenin problem ?

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Homework Help Overview

The discussion revolves around a Thevenin problem in circuit analysis, specifically focusing on finding the Thevenin equivalent voltage and resistance for a given circuit configuration.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • The original poster attempts to calculate the Thevenin resistance and voltage using superposition, but there is uncertainty regarding the value of Vth2, with differing opinions from other participants.

Discussion Status

The discussion is ongoing, with participants questioning the calculations presented and seeking clarification on the methods used to determine Vth2. Some guidance has been offered to show work for finding Vth2, indicating a productive direction in the conversation.

Contextual Notes

There is mention of setting sources to zero and the open circuit condition for terminals A-B when finding the Thevenin voltage, which may imply specific constraints or assumptions in the problem setup.

ujnikm
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Can you please help me with this thevenin problem ?

Please guys can you help me with this??
http://forum.allaboutcircuits.com/cache.php?url=http://s14.postimage.org/9eysbodr5/image.png
I set all sources to 0 so we have Rth=3.667 KΩ
then using superposition and remove the current source and replace it with open circuit so we have Vth1 =-3.333 V
then remove the voltage source and replace it with short circuit so we have Vth2=25 V
so Vth=25-3.3333=21.667 V

other friends tell me that Vth2=30 V

what's the correct ??
 
Last edited by a moderator:
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ujnikm said:
Please guys can you help me with this??
http://forum.allaboutcircuits.com/cache.php?url=http://s14.postimage.org/9eysbodr5/image.png
I set all sources to 0 so we have Rth=3.667 KΩ
then using superposition and remove the current source and replace it with open circuit so we have Vth1 =-3.333 V
then remove the voltage source and replace it with short circuit so we have Vth2=25 V
so Vth=25-3.3333=21.667 V

other friends tell me that Vth2=30 V

what's the correct ??

Listen to your friends :wink:
 
Last edited by a moderator:


gneill said:
Listen to your friends :wink:

why?
 


ujnikm said:
why?

Show your work for finding Vth2. Remember that terminals A-B are an open circuit when finding the Thevenin voltage.
 

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