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A practical amplifier will contain several components of a "shunt" capacitance inherent in the transistor and physical wiring of the amplifier circuit. As the frequency of the input signal increases, the reactance of these shunt-capacitances will decrease until, at a frequency determined by the value of the shunt-capacitance and the circuit impedance, signal attenuation begins to take place. Thus the shunt capacitances limit the high-frequency response of the amplifier (note that the transistor itself also has inherent limits to it's high frequency amplifying capability).
In the case of operational amplifiers, many operational amplifiers are internally compensated by a small capacitor (e.g. about 30pf for a 741). The internal frequency compensation capacitor prevents the operational amplifier from oscillating with resistive feedback.
What else can I help you with?
What is gain roll off?
A: As frequency increases all amplifier exhibits losses due to internal capacity or internal devices frequency limit. At the hi end of the frequency the amplifiers begins to loose gain gradually as a function of higher frequency that is what roll off is.
What causes the gain of OP AMP to roll off after a certain frequency is reached?
A: Any amplifier will reach a frequency cut off point because of hindered circuit capability however the roll of bust be controlled especially when reaching oDB point must be at a -3 db roll off to prevent hi frequency oscillation
What is a roll off filter of a microphone?
The roll off filter removes low frequencies. Usually at about 75 HZ and bellow.
Who is more gain amplifier cascaded amplifier or darlington amplifier?
Darlington amplifier has more gain when compared to cascade amplifier .
Can UJT be used as an amplifier?
No we can not use it as amplfire .... it is used for switch on and off ... and frequency generator oscelator
What is gain roll off?
A: As frequency increases all amplifier exhibits losses due to internal capacity or internal devices frequency limit. At the hi end of the frequency the amplifiers begins to loose gain gradually as a function of higher frequency that is what roll off is.
What causes the gain of OP AMP to roll off after a certain frequency is reached?
A: Any amplifier will reach a frequency cut off point because of hindered circuit capability however the roll of bust be controlled especially when reaching oDB point must be at a -3 db roll off to prevent hi frequency oscillation
What is -3dbBpoint in the scope?
This is the freq at which the vertical amplifier is 70% of the low frequency response to a sinusoidal input. It's also called the roll off (or cut off) frequency. The vertical amplifier is what sits behind each of the channels on a scope, and allows you to "zoom in" on a signal in the vertical direction (amplitude). A 100MHz scope is capable of displaying a 100MHz sinusoidal waveform but just that it's going to show it at 70% of the amplitude that it displays at ,say, 1MHz. This assumes the input signal does not roll off in amplitude. The scope is able to display higher frequencies, it's just that it cannot react to higher and higher freq. The roll off is defined by a -6dB/octave "curve", which when plotted on a log freq scale is a negative slope above the cut off freq.
Connect a 12v wire to an amplifier?
Ensure the amplifier is turned off. Connect the positive (+) terminal of the 12V wire to the amplifier's positive terminal and the negative (-) terminal of the 12V wire to the amplifier's negative terminal. Once connected securely, you can then power on the amplifier.
Where can one buy a roll off truck?
A roll off truck is one that is used to haul roll-off containers. A typical roll-off truck can be bought online from the Benlee website, and can be shipped from Cleveland or Detroit.
What has the author Francisco Piniella Corbacho written?
Francisco Piniella Corbacho has written: 'Roll-on/roll-off' -- subject(s): Roll-on/roll-off ships
How do you get a clean sound from your guitar?
By turning off the distortion on your amplifier
Why is it easier to tear a paper towel off of a full roll than off of a mostly used roll?
A full roll is very sturdy, while a mostly used roll is more fragile. Therefore, when you go to pull the paper off the full roll, it comes off easily without you having to steady the roll...but if you want to tear paper off a mostly used roll, you'll have to hold the roll down before you tear it off so the roll doesn't fall. Basically, because a full roll is sturdier than a mostly used roll.
What is RORO-PAS?
Roll on Roll off passenger ship.
What does the Roll-off mean in the dance terms?
The roll off in rock and roll dancing is when the lady spins out from a closed position to about a arms length away.
How do you replace your amplifier in your 2004 Kia Optima?
My amplifier was in the trunk on the passenger side wheel well. 3 nut and it comes right off.
Why doesmy amplifier turn off when you give it volume?
The wire has a shortage in it
