That depends on both the input signal and the type of amplifier the transistor is used in.
Gain, in the common emitter amplifier, is beta (hFe) or collector resistance divided by emitter resistance, whichever is less. Substituting a different beta (hFe) transistor will affect gain, if hFe is less, or increase stability and design margin, if hFe is greater.
An amplifier is an electronic device used to increase the amplitude of electrical signals in sound production.
Amplifier is used in an FM transmitter to increase the level of a signal suitable for transmission
Answer 1: From the word amplfy, which is transitive verb me:ning 1 : to expand (as a statement) by the use of detail or illustration or by closer analysis 2 a : to make larger or greater (as in amount, importance, or intensity) : increase b : to increase the strength or amount of; especially : to make louder c : to cause (a gene or DNA sequence) to undergo amplification Answer 2: The word "amplifier" is derived from the word "ample" which, in turn is derived from the Latin word "amplus" meaning full or plentiful or generous in size. Any part of the electromagnetic spectrum can be amplified, but the term usually refers to the audible spectrum (20 - 20,000 hertz) where the sound is made greater by an amplifier.
That depends on both the input signal and the type of amplifier the transistor is used in.
Sound is amplified through the use of devices such as speakers or microphones that increase the volume of sound waves. Factors that contribute to the amplification process include the power of the amplifier, the sensitivity of the microphone or speaker, and the quality of the audio equipment being used.
You can amplify the sound waves by microphone, amplifier and loudspeaker.
Use a series resistance at the input. A problem could be that the amplification goes down.
Increasing base current causes a proportionate increase in collector current - proportionate to hFe, unless the transistor is operated outside of linear mode.
are you referring to DNA amplification using PCR
Gain, in the common emitter amplifier, is beta (hFe) or collector resistance divided by emitter resistance, whichever is less. Substituting a different beta (hFe) transistor will affect gain, if hFe is less, or increase stability and design margin, if hFe is greater.
The output power of an amplifier is greater than its input power, whereas the output power of a transformer is almost the same as its input power. In other words, an amplifier increases acts to increase power, whereas a transformer only increases voltage.
Transistor increase the strength of a weak signal from the base
A microphone and an amplifier with a loudspeaker does this. The microphone converts the soundpressure to electric signals. The amplifier amplifies these signals and the loudspeaker converts back the electric signals to sound pressure. Our ear drums are moved by the sound pressure as a sound field quantity. It is not the sound intensity as an energy quantity.
The emitter bypass capacitor in a common emitter amplifier will have less resistance as the frequency increases. Since gain in this configuration is collector resistance divided by emitter resistance (within limits of hFe), the gain will thus increase for higher frequencies, making this into a high pass filter.
A cross coupled transistor pair are used to increase the gain of the cell.