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 .
An opamp has a ground terminal on one of the pins.
Feedback resistance is used to feed back the current obtained at output back into the circuit. Thus a virtual ground concept is developed.this is majorly used in applications of OPAMP[IC 741].
A practical opamp is designed to approach the characteristics of the ideal opamp as closely as possible. The open loop voltage gain of an ideal opamp is infinite, so while this is actually impossible to achieve practical opamps are built with as high an open loop voltage gain as possible.
A comparator is simply an opamp with a certain configuation of external circuitry ( a few components) that make it function as a comparator.
10 megohms is the resistance through which 10 volts would push 10 microamps of current. Input impedance is the resistance seen by a signal source when connected to the input Often, this means there is a 10 megohm resistor in series with the input going to a virtual ground on an opamp circuit. 10 megohms is a common input impedance for a digital voltmeter.
no, the 741 opamp is a monolithic IC.
It is an opamp chip consisting of 8 pins
741 opamp
An opamp buffer circuit is one where the input signal is connected to the plus input, and the output is connected to the minus input. Within the performance limitations of the opamp, the output will track the input. The advantage of the buffer circuit is that is presents very little load impedance to the input signal, while providing a low impedance from the output to drive whatever circuitry is connected there.
Possibly Linear, in which case it means analog. The LM324 is an opamp.
opamp is a device used to amplify ac as well as DC input signals. It is called as operational amp becoz it is used to perform all mathematical operations. Symbol of opamp indicates the direction of current.
Feed back resistance plays the vital role of controlling output of the OPAMP. Also surrounding temperatures affects the out put of OPAMP. ANSWER: The gain drives the output to either B+ or B- minus the saturation of the output circuitry