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Transistor increase the strength of a weak signal from the base
What else can I help you with?
What is hfe and hfc in transistor?
I don't know about hfc, but hFE is the amplification factor by which the transistor amplifies the base current. Therefore, if hFE is 100, the base current is amplified by a factor of 100.
How do you use 'transistor' in a sentence?
I can give you several sentences.I bought a transistor radio.The transistor amplified the signal.We studied the transistor in science class.
Can the amplified output of the transistor exceed the range of power supply given to it?
No, and neither can the amplified output of a vacuum tube.
What does hFE mean on an electrical meter?
This is a so-called hybrid transistor parameter, also known as beta, representing the forward emitter current gain. This measures how much the base current gets amplified by the device.
What are the 3 electrodes of transistor?
Three legs on a transistor are represented by these letters E Emitter =you connect your input depending on type of your transisitor neg or pos B Base = you connect control input again depends on type C collector = here comes your amplified output there are 2 types of transistors PNP and NPN there is no current flow from emitter to collector when ther is no control input at the base. a very small opposite current to the emitter polarity make current flow multiplied by the amplification factor of each transistor. if you use a sound frequency input at the base you have amplified sound output at collector if you just use dc you have amplified dc current output. some transistors leak current to kill that unwanted flow through collector use a small resister from emitter to base.
Is active is a cutoff region of transistor?
The active region of a transistor is when the transistor has sufficient base current to turn the transistor on and for a larger current to flow from emitter to collector. This is the region where the transistor is on and fully operating.
What is the difference between a switching transistor and an ordinary transistor?
In the switching transistor the output current is controlled by the (current) and this is also called current controlled current device (CCCD). But in ordinary switch we controlled output current physically...
What happens when the base current of a transistor is decrease?
in a properly biased transistor, collector and emitter current also decrease
Which is the largest current in a pnp transistor?
emitter current
What is meant by saying at what current is transistor biased?
The saying "at what current is transistor biased" means to ask the current through the transistor when there is no signal present. Typically, a transistor is biased at the center of its linear region, so as to minimize distortion. This, of course, depends on whether or not the transistor is AC or DC coupled, and where the clipping points might be.
What percentage of the total current in a transistor flows through the collector?
The total current in a transistor is the emitter current, which is the sum of the collector current and the base current. The ratio of collector current over base current, in linear mode, is beta-DC, or hFe. However, in order for linear mode to be true, the ratings of the transistor must not be exceeded, and the collector current must not be limited by the circuit. Note also that hFe is temperature dependent, and is expressed in the data sheet as a minimum, not an absolute value - it can vary from transistor to transistor.
What is description of Bc547 transistor?
BC547is an NPN bi-polar junction transistor. A transistor, stands for transfer of resistance, is commonly used to amplify current. A small current at its base controls a larger current at collector & emitter terminals.BC547is mainly used for amplification and switching purposes. It has a maximum current gain of 800. Its equivalent transistors are BC548 and BC549.The transistor terminals require a fixed DC voltage to operate in the desired region of its characteristic curves. This is known as the biasing. For amplification applications, the transistor is biased such that it is partly on for all input conditions. The input signal at base is amplified and taken at the emitter. BC547 is used in common emitter configuration for amplifiers. The voltage divider is the commonly used biasing mode. For switching applications, transistor is biased so that it remains fully on if there is a signal at its base. In the absence of base signal, it gets completely off.
