Op Amp Q: Will Vout Go to Zero When Inverting Input is Greater?

AI Thread Summary
When the inverting input of an op-amp is greater than the non-inverting input, the output (Vout) will move towards the negative supply voltage but will not reach zero. There is typically a small voltage difference, often one or two volts, between the output and the negative supply. This behavior is influenced by the feedback configuration, whether negative or positive. Op-amps are designed with both positive and negative supply voltages, which limits the output range. Therefore, Vout will not equal zero under these conditions.
Garengineer
Messages
4
Reaction score
0
Hello. I have a very quick op amp question. I'm trying to understand an omp amp. My question is will vout of an op amp go to zero if the inverting input is greater than the non inverting input ( even if there's a negative/positive feedback)?
 
Engineering news on Phys.org
Opamps normally have a positive and a negative supply.

If the inverting input is greater than the non inverting input then the output will go towards the negative supply voltage, but usually it can't be exactly the same as the negative supply.
There is always a volt or two difference between the output and the negative supply.

Similarly, the output cannot be the same as the positive supply either.
 
Thread 'Weird near-field phenomenon I get in my EM simulation'
I recently made a basic simulation of wire antennas and I am not sure if the near field in my simulation is modeled correctly. One of the things that worry me is the fact that sometimes I see in my simulation "movements" in the near field that seems to be faster than the speed of wave propagation I defined (the speed of light in the simulation). Specifically I see "nodes" of low amplitude in the E field that are quickly "emitted" from the antenna and then slow down as they approach the far...
Hello dear reader, a brief introduction: Some 4 years ago someone started developing health related issues, apparently due to exposure to RF & ELF related frequencies and/or fields (Magnetic). This is currently becoming known as EHS. (Electromagnetic hypersensitivity is a claimed sensitivity to electromagnetic fields, to which adverse symptoms are attributed.) She experiences a deep burning sensation throughout her entire body, leaving her in pain and exhausted after a pulse has occurred...
Back
Top