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If Beta is infinite, then the current gain will be unity.
The current gain in CE mode called as beta (ß) Tha current gain in CB mode called as alpha (A) ß= A/(1-A) =0.98/(1-0.98) =49 the current gain is 49 in CE mode
Small is relative term, current gain of the transistor decides how small base current would be than collector current. Most of the emitter current of electrons diffuses through the thin base into the collector. Moreover, modulating the small base current produces a larger change in collector current.Small is relative term, current gain of the transistor decides how small base current would be than collector current. Most of the emitter current of electrons diffuses through the thin base into the collector. Moreover, modulating the small base current produces a larger change in collector current.Small is relative term, current gain of the transistor decides how small base current would be than collector current. Most of the emitter current of electrons diffuses through the thin base into the collector. Moreover, modulating the small base current produces a larger change in collector current.
A bipolar junction transistor (BJT) experiences forced current gain when it operates in the active region, particularly under conditions of high base current. In this region, the transistor can amplify the input current, allowing a small base current to control a much larger collector current. This condition is essential for applications such as amplification and switching in electronic circuits. The forced current gain is typically represented by the current gain factor (β or h_FE) of the BJT.
Ib =Ic /beta beta is the gain factor of the amp.
alpha is the common base current gain = Ic/Ie.beta is the common emitter current gain = Ic/Ib.
high voltage gain :- common base since the ratio of output impedance to the input impermanence is very high in common base mode high current gain :-common collector since it is the ratio of Ie/Ib
GAIN is a function of load current but basically a small current in the base will make a big change of collector current therefore making a transistor a voltage amplifier as opposed to a current amplifier
The typical base-emitter gain (beta or hFE) of a CA3046 is 100, at an emitter current of 100ma. This translates to a base-collector gain (alpha) of 0.99.
current gain
It still has a current gain significantly high though the voltage gain is close to unity.
Yes. The ratio of collector current and base current is DC gain, also known as beta, or hFe.