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it is a mode of amplifier connection where the base part of the transistor is made common to both input and output.the circuit diagram is as shown below. the transiator gain(represented by the greek letter beta-B) is usually evaluated by the formula B=output current divided by input current. as we know that when the transistor is connected in common base mode the input pert will be emitter and the output part will be collector and we know that the collector current is quiet less than emitter current. as per the formula gain will be less than one. practically we consider emitter current as equal to collector current and hence B approaches 1 in case of common base mode amplifiers.as the gain is very less it is very less used as amplifiers. generally they use common emitter mode for amplification as this mode optimum amount of amplification.
What else can I help you with?
What is the configuration of cascade amplifier?
In a cascade amplifier, two identical or non identical amplifiers are cascaded ,i.e., connected in series through a capacitor. They are mostly common emitter amplifiers that are cascaded together.The final gain of the cascaded amplifier is the product of the first amplifier's gain and the second amplifier's gain. However, the bandwidth of the cascaded version becomes lesser than the individual gains.
What are Passive components and its characteristics?
A passive component does not interact as an active component like an amplifier
What are the characteristics of instrumentation amplifier?
a high common mode rejection ratio, high impedance
What is the difference between a CB amplifier and CE and emitter-follower?
I think you mean a common emitter amplifier, which is an amplifier of voltage. Emitter-follower or common collector amplifiers are used to match impedances, or to amplify power or current. The emitter-follower is a type of common emitter circuit that has a resistor between the emitter and ground. The output signal is taken from the point between the emitter and its resistor.
Who is more gain amplifier cascaded amplifier or darlington amplifier?
Darlington amplifier has more gain when compared to cascade amplifier .
How do you install a linear CB amplifier?
You don't. Linear amplifiers are illegal for CB use. The maximum input into the final stage of a CB transmitter is 5 watts.
What is a bilinear amplifier?
it amplifies both the incomeing and outgoing signals on CB radios
Why is the gain and bandwidth of a ce-cb cascode amplifier greater than a ce amplifier?
Gain of ce-cb cascode is nearly equal to the gain of ce amplifier, because in a ce-cb cascode, the gain of the ce stage is equal to 1, and the gain of the cb stage is nearly equal to an isolated ce amplifier. Hence, gain of both are nearly equal. On the other hand, Bandwidth of ce-cb cascode is much higher than the bandwidth of ce amplifier because the cb stage in the cascode configration is not subjected to any Miller effect, thereby improving the high frequency response. The absence of Miller effect is due to the fact that the base of the cb stage is grounded thus, shielding the collector signal from being fed back into the emitter input. To be more clear, the gain of CE stage in cascode is nearly 1, which reduces the miller effect on the cb stage greatly.
Can you convert a car audio amplifier into a cb ham radio amplifier?
No. Not only is it illegal to amplify a CB radio beyond the FCC permitted four watts, but stereo amplifiers and linear amplifiers work in very different ways.
How do you increase cb wattage?
To increase CB (Citizens Band) radio wattage, you can add an external amplifier specifically designed for CB radios. This amplifier will boost the output power of your radio and effectively increase the wattage. However, it is important to ensure that you are in compliance with legal power limits set by your country's regulations.
Do you need to use a amplifier with a cb radio?
No, and it's actually illegal to do. CB radios come from the factory transmitting four watts, which is the legal limit.
Inputoutput and transfer characteristics of pnp and npn transistor in common base configuration?
result of output characteristics of npn transister in CB mode
How can you make an amplifier for a contact mic using batteries?
I think you are talking about a pre-amp for a mic. Search CB Radios and you will see alot of battery powered mics.
What is the configuration of cascade amplifier?
In a cascade amplifier, two identical or non identical amplifiers are cascaded ,i.e., connected in series through a capacitor. They are mostly common emitter amplifiers that are cascaded together.The final gain of the cascaded amplifier is the product of the first amplifier's gain and the second amplifier's gain. However, the bandwidth of the cascaded version becomes lesser than the individual gains.
What are Passive components and its characteristics?
A passive component does not interact as an active component like an amplifier
What are the characteristics of instrumentation amplifier?
a high common mode rejection ratio, high impedance
Can a CB radio be modified to increase its power output?
Yes it can. It can also be connected to an external amplifier that increases the transmit power before the signal gets sent to the antenna. Both of these procedures, and any other trick to increase the power used for CB operation, are federal crimes.
