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Can you short an op amp?
pvh1987. I know that most operational amplifiers can tolerate the output being shorted to ground. Many can even do that for unlimited time and regardless of the output voltage according to many data sheets.
How is the virtual short maintained at the input of the op amp?
A virtual short-circuit (or simply virtual short) refers to a condition of a differential input amplifier such as an op-amp in which its noninverting and inverting inputs have almost the same voltage. The output voltage of an op-amp is equal to its gain multiplied by a difference in voltage between the two inputs.
What is the relation between input and output in an inverting amplifier?
When the inputs are equal, there is no output. When the inverting input is greater, the op amp becomes saturated and output voltage is equal to the positive voltage supply. When the inverting input is greater, the output voltage is equal to the negative voltage supply.
What does output short circuit mean?
output current
The current into an output terminal when the output is short-circuited to ground with input conditions applied that, according to the product specification, will establish the output logic furthest from ground potential.
What is input and output on amp?
A signal is traveling out of the amp and into the headphones. The “aux in” jack on your amp, however, is just that–an input. The signal from your mp3 player, CD player or other outboard devices is traveling into the amp. Similarly, the “line out” jack on the back of your amp is just that–an output.
What is an example of an op amp shorting?
Many can even do that for unlimited time and regardless of the output voltage according to many data sheets. What if the output is shorted to something else than ground? An example would be that the output of the op amp is 0 V and it is shorted to either the positive or negative supply rail.
What happens when the op amp output is 0 V?
An example would be that the output of the op amp is 0 V and it is shorted to either the positive or negative supply rail. What will happen then? I guess that the answer depends on the op amp output stage and current protection circuit.
What happens when you ground an op amp?
If you ground an op amp’s inverting input terminal and apply a 1 V signal to the noninverting input terminal, the output will saturate at (or near) the positive rail and the difference between V IN+ and V IN– will be 1 V.
What is the virtual short in op amp circuits?
The Virtual Short. One of these assumptions is called the virtual short circuit, or just virtual short. Actually, this is not one of the fundamental characteristics of an ideal op amp. Rather, the virtual short is a theoretical situation that arises from one of the fundamental characteristics of an ideal op amp, namely, infinite open-loop gain.