Hi,

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

 

hi Jiwoo.
Welcome to AAC.
As this is homework, please post your best attempt at answering, we can then help you.
E

 

@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.

 

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)?

 

@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.