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You can see at http://en.wikipedia.org/wiki/Virtual_ground.
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∙ 16y ago
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What is the difference between ordinary ground And virtual ground?
Ordinary ground is a simple connection to ground. Virtual ground is an op-amp's response to maintaining a reference point in the bridge with respect to an ordinary ground. This is why an op-amp makes a nearly ideal mixer - it allows you to sum multiple inputs together with little or (nearly) no cross-talk. (Limitations, of course, being based on CMRR and frequency response.)
What shows how different parts of a system fit together from various?
Virtual Prototypes
What are the most famous virtual worlds?
With today's technology, there are many virtual worlds that exists. The most famous virtual worlds include World of Warcraft, Sim City, and Second Life.
What does virtual water mean?
Water that is used to make services and goods that we use is virtual water. It is also known as embodied water.
What does virtual image mean in optics?
It means that the image cannot be seen on the screen.
What is ordinary ground and virtual ground in difference?
Ordinary is when you can physically stand on this said ground. Virtual ground occurs when the ground is virtually the same between two disagreeing parties. EX: I like cake and you like cake. That is virtual ground in an argument. Whereas, a disagreement would be an atheist going to Church. However that's a paradox...
Should op amp remain in active region for virtual ground?
An op amp must remain in its active region for virtual ground to be preserved.
Which characteristics of Op-Amp is responsible for virtual ground?
The main parameter responsible for virtual ground of an Op-Amp is Input Impedance . Generally , for an Op-Amp it is very high . So , we can conclude that the characteristics of an Op-Amp responsible for virtual ground is high input impedance .
What is virtual ground and virtual short circuit?
VIRTUAL GROUND:-1]If the non-inverting (+) terminal of OP-AMP is connected to ground, then due to the "virtual short" existing between the two input terminals, the inverting (-) terminal also be at ground potential. hence it is said to be as "virtual ground".2]similarly if the inverting (-) terminal is connected to ground, then the non- inverting (+) terminal will be at "virtual ground" potential.3]The concept of virtual ground has been used extensively for amplifier analysis, specially we use this concept in the inverting amplifier.VIRTUAL SHORT:-1] The input impedance (Ri) of an OP-AMP is ideally infinite. Hence current "I" flowing from one input terminal to the other will be zero.2] Thus the voltage drop across Ri will be zero and both input terminals will be at the same potential. In other words they are virtually shorted to each other.
What is the principle of virtual ground?
If no current flows between two points. ONE point is grounded then other point is said to be virtually grounded. THIS is called principle of virtual ground.
What is virtual ground in an op amp?
0 volt reference
What is the difference between ordinary ground And virtual ground?
Ordinary ground is a simple connection to ground. Virtual ground is an op-amp's response to maintaining a reference point in the bridge with respect to an ordinary ground. This is why an op-amp makes a nearly ideal mixer - it allows you to sum multiple inputs together with little or (nearly) no cross-talk. (Limitations, of course, being based on CMRR and frequency response.)
What is difference between Real image and virtual image?
Real image-They are formed by actual intersection of light rays.It is inverted.It can be projected on a screen.It is formed on the mirror.Virtual image-It is formed when rays appear to meet at a point.It is laterally inverted and erect.It cannot be projected on a screen.It is formed behind the mirror.
Inverted R-2R ladder type DAC?
The SMPS switch is connected to the virtual ground of the inverting amplifier when digital input is '1' instead of Vref and switch connects to ground when digital input is '0'. In both the cases the switch is at ground.
What is the concept of virtual ground in opamps?
since an op-amp has very high open loop gain, the potential difference b/w its inputs tend to zero when a feedback n/w is implemented.to acheive a reasonable voltage at the output and thus equilibrium in the system,the output supplies the inverting input with enough voltage.the inverting input although not connected to ground,will assume a similar potential ,becoming a VIRTUAL GROUND...
What is virtual ground and zero point in operational amplifier?
Virtual ground is a point in the circuit that is maintained at some known reference, such as ground, without actually being connected to it. This is commonly the junction of the resistor divider between input and output at the negative input pin, while the positive input pin is grounded (usually through a resistor). The op-amp maintains this virtual ground by making the output be whatever it takes to rebalance the input divider. Zero point is the half-way point between the two power supply pins. With a normal op-amp configuration running at +15 and -15, the zero point is ground. With a single ended configuration, such as +5 and ground, the zero point is 2.5 volts. It represents the mid point that the op-amp is capable of producing.
Where is Anfield?
Anfield ground is in the area of Anfield in Liverpool which is in England. It's on one side of Stanley park, on the otherside is Goodison, Everton's ground. If this information doesn't help you try checking Google Earth or Virtual Earth. But I hope this does help you.
