0
Yes, when designing distributed amplifier, the bandwidth (cut-off frequency) is inversely proportional to Cin(Fc=1/(pi*R*Cin)). Lower Cin means higher bandwidth.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
What are the main differences between FETs and BJTs in terms of input impedance?
FET has very high input impedanceBJT has very low input impedance
Could you briefly explain the applications of FET?
Due to its *low noise *high input impedence and low output impedence FET is used in numerous applications. *Buffer ampliier *Phase shift oscillator *Integrator *Amplifier
Compared to bipolars FETs have-a high input impedance b low input impedance c same input impedance?
FET s have very high input impedance when compared with Bipolar transistors.
What gate the output will be low for any case when one or more input are zero?
An inverter has a high output when the input is low, and a low output when the input is high.
Why FET is an excellent buffer amplifier?
FET is an excellent buffer amplifier because it has an high input impedance by which when we are connecting two networks for transferring out put of one stage to another stage all the power is drown on the second network not on first network.if first stage network has an low input impedance then first circuit drown all power from second circuit.
What is the difference between jfet and bjt?
FET's (field effect transistors) are unipolar devices because unlike BJT's that use both electron and hole current, they operate only with one type of charge carrier. BJT is a current-controlled device; that is the base current controls the amount of collector current. FET is a voltage-controlled device, where voltave between two of the terminals (gate and source) controls the current through the device. BJT's have a low input impedance ( ~1k -3k ohms), while FET's have a very high input impedance (~10^11 ohms). Consequently FET's have a lower power consumption. BJT's produce more noise than FET's . FET's have a slower switching speed . BJT's are subject to thermal runway while FET's are immune to this problem. BJT's have a higher cutoff frequencey and a higher maximum current then FET's. FET's are easy to fabricate in large scale and have higher element density the BJT's.
Why electrolytic capacitors are used for frequency response of BJT as amplifier?
It can take a lot of capacitance to present a low impedance to a low frequency. Electrolytics offer lots of capacitance for a low price.
What is the definition for Input low current?
Input Low Current, IIL, is the current that must be sinked (pulled from) an input in order to guarantee that the input is seen as low.
What is the effect of capacitance at high frequencies?
A: Is the same as low frequency except it becomes a predominant factor.
Do you need the high input piece for the amp to get it to work?
high input is for speaker level input and low input is rca jacks
What are the applications of jfet transistor?
The Junction Field Effect Transistor (JFET)exhibits characteristics which often make it more suited to a particular application than the bipolar transistor. Some of these applications are: - High Input Impedance Amplifier - Low-Noise Amplifier - Differential Amplifier - Constant Current Source - Analogue Switch or Gate - Voltage Controlled Resistor
What is capacitance measured in?
. . is measured in farads or more usually microfarads or even picofarads. A capacitor has a capacitance of 1 farad when it has a voltage of 1 volt when there is 1 coulomb of charge on each plate. 1 coulomb is 1 amp flowing for 1 second.
