Register to reply 
Input and Output Resistance (Electronics) 
Share this thread: 
#1
Oct605, 05:58 PM

P: n/a

R_out
***o .........................................+........................ .................................V_signal.......................* R_in ..V_out, perfect.............................................* ................................................................... ................................................................... .................................................................. o =.......(ground)................................................= Say that circuit 1 is the left side of the above circuit (ignore the dots), and circuit 2 is the right side (R_in). First I have to find V_signal using kirchoff rules so I get V_signal R_out  V_out, perfect  R_n = 0 But I am not sure what happens with R_in >> R_out, R_in << R_out or when R_in = R_out. 


#2
Oct605, 06:07 PM

Emeritus
Sci Advisor
PF Gold
P: 5,532

I can't make heads or tails of your equation.
[tex]V_{signal}R_{out}V_{out,perfect}R_n=0[/tex] That's what it looks like, but if that is in fact the equation that it makes no sense. You're subtracting voltages and resistances, which have totally different units. 


Register to reply 
Related Discussions  
Input and Output resistance(CE amplifier)  Electrical Engineering  24  
Input & Output Impedance  Engineering, Comp Sci, & Technology Homework  14  
Digital output and input  Electrical Engineering  2  
Output/input of inverter  Electrical Engineering  6  
Input/output question  General Engineering  9 