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An amplifier needs at least one active device (transistor or op-amp), a feedback loop, and proper phase shift to create oscillations. The loop gain of the amplifier must be greater than or equal to one and the phase shift around the loop must be 360 degrees or a multiple of 360 degrees. Additionally, some form of energy storage (inductors or capacitors) is typically required in the feedback loop to sustain oscillations.
What else can I help you with?
What are the basic properties required by a system to oscillate?
For a system to oscillate, it must have both inertia (resistance to change in motion) and a restoring force (a force that brings the system back to its equilibrium position after being displaced). These two properties are necessary for the system to oscillate back and forth around a stable equilibrium point.
What do light oscillate?
Light consists of electromagnetic waves that oscillate due to the varying electric and magnetic fields associated with it. These waves oscillate perpendicular to each other and to the direction in which the light is traveling.
How do you use oscillate in a sentence?
The word "oscillate" in everyday speech means to go back and forth, either physically or mentally. An example of a sentence using the word "oscillate" is "My new job is great, but I have to oscillate between New York and Los Angeles at least once a week. "
What are conditions for an oscillator to oscillate?
For an oscillator to oscillate, it needs a restoring force to bring it back to a central position after being displaced, an initial displacement to start the oscillation, and a mechanism to convert potential energy into kinetic energy and vice versa. Additionally, the system must have some form of damping to offset losses and sustain the oscillations.
Does electromagnetic energy need something to travel through?
No, electromagnetic energy can travel through a vacuum. It propagates through space as electric and magnetic fields that oscillate in a perpendicular fashion.
How operational amplifier works as an oscillator?
A: Very easy to do just provide a positive feedback and/or a phase shift it will oscillate
Why amplifier is required?
Amplifiers are the device which are used to amplify a signal Multistage amplifier are use to amplify a signal into a desire level
Is it possible that an amplifier without feedback may oscillate at high frequency?
it all depends on its open loop gain or crossing the zero db point at slope less the -1db
Do parabolas oscillate?
NO. They do not oscillate.
What amplifier circuit is typically used as the input stage for an operational amplifier?
Differential amplifier ANSWER: A differential amplifier is an op amp. If any amplification is required a preamplifier is used mainly to cut the white noise and improve the input impedance
What are the basic properties required by a system to oscillate?
For a system to oscillate, it must have both inertia (resistance to change in motion) and a restoring force (a force that brings the system back to its equilibrium position after being displaced). These two properties are necessary for the system to oscillate back and forth around a stable equilibrium point.
Is oscillate a verb?
Yes, oscillate is a verb.
Difference between amplifier and feedback amplifier?
An ordinary amplifier can have high gain but is unstable, drifts, can oscillate, etc. An amplifier with negative feedback has lower gain but is stable, does not drift, won't oscillate, etc.
How do you use the word oscillate in a sentence?
The swing will oscillate after Helen moves it.
Frequency compensation techniques in op amp?
This answer is not simple amplifier if the gain is unlimited will tend to oscillate at higherfrequency usually there is a pin out for some amplifiers whereby adding a snub or capacitor will limit this gain internally so it can be stabilized. There is recommended techniques by not a guaranty of stability it depends on the amplifier bandwidth factor Q and grounds and other factors.
When will a negative feedback amplifier circuit be unstable?
It will oscillate if the loop gain exceeds 1 when the phase difference round the loop is 360 degrees. The frequency of oscillation is set by the loop phase being equal to 360 degrees.
Is paper capacitor use in transistor amplifier?
It can be, but may not be required. Capacitors are used for biasing purposes, to remove DC from inputs, and for filtering in amplifier circuits (just to name a few).
