Maximum output voltage (circuit with OP-amp and diode)

Thread Starter

budala

Joined Oct 10, 2018
1
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Hi, first post here and total noob:)
V1=1V,500Hz ; Vd=0(voltage drop on Diode); OP is ideal, I need to find max output voltage.
I thought its Vo=Vr=-4 but i was wrong as its not right answer.
Maybe i should apply Id=(V1-Vo)/R1 > 0 or smth, but i have one more try on test and my brain is having farts from panic, so any help would be appreciated
Vo (max)=?
 

ebp

Joined Feb 8, 2018
2,332
some hints:

What do you know about the relationship between the voltages at the two inputs of an op amp when it is operating in its normal range (i.e. you aren't trying to make it put out voltage that is outside of its supply voltage range)?

Where do currents in an ideal op amp circuit go?

What does that diode do in terms of current flow?

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Your input signal swings from -1 V to +1 V with respect to circuit common. Can you calculate what the output voltages would be for each of those conditions? How about when the input signal voltage is zero?
 
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