How do you determine the Counter electromotive force (CEMF)?

Thread Starter

Jiwoo

Joined Feb 6, 2023
19
Hi,

there is this circuit given and I should generally calculate the Counter electromotive force. Any Ideas how it is done?

1675681216756.png
 

Thread Starter

Jiwoo

Joined Feb 6, 2023
19
@ericgibbs Hi, thanks :)

Well the thing is, there are multiple terms that I came across which where I don't know what the difference is. From my understanding, the CEMF voltage is the voltage on the Ze resistors. So I would multiply the current of 9R and R with the Ze resistors. But I am not sure if I am on the right direction.
 

WBahn

Joined Mar 31, 2012
30,303
What does the triangle represent?

Counter-EMF is generally the EMF produced by an inductor in response to a change in current. I don't see how that applies here (unless the Z elements have an inductive component). What is Ysub(something unreadable)?
 

Thread Starter

Jiwoo

Joined Feb 6, 2023
19
@WBahn The triangle is a Differential amplifiers. The task says that the system is getting disturbed by capacitive coupling. By Ysub I think you mean the voltage on the left, thats the measurement voltage.
 
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