A transistor
That really depends on what type of amplifier you want and what you will use it for. I would suggest you look for basic electronics theory books at your local library, and decide what kind of amplifier you need, and follow the author's advice. I would recommend 'The Art of Electronics' if you can find it.
Power supply, oscillator, modulator, and amplifier.
Variable resistor is a passive component where we can vary its resistance simply by rotating it's head .These resistors are available from few ohm to several mega ohm. and are used for regulator or gain control in amplifier circuits. It is three terminal device.
it is used to avoid drift problem
A PNP transistor has no advantage or disadvantage over an NPN transistor in its ability as an amplifier. Rather, the current-handling capacities of the transistor determine if it's usable as an amplifier.
I think you mean a (TV antenna amplifier) RF amplifier used with coax cable. The answer is YES it will work with DTV.
A transistor does not act as an amplifier. It is used as a component in an amplifier circuit.
A transistor
The component that gets amplified will depend on the type of amplifier we are using. In general the voltage component of the signal gets amplified.
A passive component does not interact as an active component like an amplifier
Power supply, oscillator, modulator, and amplifier.
A: DC couple amplifiers refers to stages of amplifiers where is the biasing is direct without adding capacitors to remove the DC component from amplifier to amplifier
A transistor is an electronic component. By itself it has little use. An amplifier is a complete, functional circuit, generally made up of several components. A transistor can be a component part of an amplifier, however an amplifier may be constructed without any transistors (using vacuum tubes instead, for instance).
i know that an op amp can be used as an amplifier and a switch, but i want to have more uses of the component or device.
It may not be the amplifier at all ... it could be that the speaker cone is torn. If it is the amplifier it would mean that some component in the audio output section is faulty and needs repair or replacement.
There are a bunch of important factors to consider prior to buying an amplifier for a vehicle. Primarily, you must decide what the amplifier will be primarily used for. If the amplifier will be used for powering subwoofers it would be good to consider the bridged or mono capabilities as well as ohm ratings of the amplifier as well as the draw, or amount of power the amplifier will pull from the car's electrical system. The most important factor in considering an amplifier for powering subwoofers is probably output watts, which will determine the amplifier's power to the speakers and the amount of bass to be transmitted. If the amplifier is to be used to power mid or high range speakers, a multi channel (four or more) amplifier should be considered because of the ability to run multiple sets of speakers or component sets off of the different channels of the amplifier. The considerations inherent to the subwoofer amplifier are also present including watt ouput and power draw, but when selecting a multi cha
A instrumentation amplifier is a special purpose linear amplifier used to amplify low level signals. These are used in many industrial and medical applications.
An amplifier is used to increase the strength of the signal.