A: It should be that is the normal operating mode. To be linear it strongly depends on negative feedback to maintain it into that linear region. By itself without any feedback it is very unstable due to the hi gain open loop availability
Possibly Linear, in which case it means analog. The LM324 is an opamp.
There are many examples of these. I would compare a linear device as a device giving a linear output as a result of the input. This can be an amplifier or simply the circuits that makes up the amplifier. A non-linear device could be a computer chip or a logic chip that is either on or off (only 2 stages) on both input and output. Some devices combine linear and non linear working modes. A typical OpAmp has got 2 inputs that can vary, where as the output is either On (close to input voltage of the circuit) or Off (close to input negative voltage or GND of the circuit) Other forms of linearities can be within a single transistor. It may have a linear voltage curve. This curve can also be non linear. This most often very dependent upon temperature.
YES it is linear. It is a passive device classified as linear however as frequency increases its behavior will change.
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.
An active device amplifies the signal by some value - such as an active filter using an OPAMP. A passive device does not provide any amplification - such as a passive filter network of inductors and capacitors.
There is no formula it depends on the device. If the device is linear it can be ascertain but if it a non linear then it becomes quite complex
A: THE WORD IS LINEAR. yes it is not a very linear device as a function of current
diode is nonlinear device,so device from diode is also nonlinear
Zener diode is not a linear device... it is non-linear one. Since linear devices are those devices which have linear characteristics(V-I CHAR.), or follows the Ohm's law i.e. voltage is directly proportional to current. but in case of Zener diode ohm's law fails down. the V-I char. in both forward biased & reverse biased condition is non-linear. So. Zener diode is non-linear device
not when they hit the power rail they aren't. or did you mean an opamp in a feedback circuit? the feedback circuit can give them a wide variety of transfer functions, some linear some nonlinear. nonlinear transfer functions include LOG, ANTILOG, GYRATION, SQRT, etc.
A comparator is simply an opamp with a certain configuation of external circuitry ( a few components) that make it function as a comparator.
Inductor is a nonlinear device. since v=L di/dt.