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A bipolar junction transistor (BJT) can amplify DC signals, but it requires proper biasing to operate in the active region. By applying a DC input signal to the base, the BJT can control a larger DC current flowing from the collector to the emitter, effectively amplifying the input. However, the amplification is limited to small variations around the bias point, and the BJT cannot amplify a constant DC level without an input signal. Therefore, while BJTs can amplify DC, they are primarily used for AC signal amplification.
What else can I help you with?
When the forward saturation in Bipolar junction transistor occurs?
Forward saturation in a BJT occurs when the ratio of collecter-emitter current and base-emitter current reaches hFe or dc beta. A that point, the BJT is no longer operating in linear mode.
What is the expected amplification of a bjt transistor amplifire if the dc supply is set zerovolts?
A: In mathematics it is learned that any part,number, items,are equal to zero if mulitplied by zero
Why fet is preferred over the bjt?
Disadvantage:Easy to damage when compared to BJT
What condition does a bjt power experience forced current gain?
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.
Why the common mode signal should be rejected in differential amplifier?
because of the coupling between the two transister and absence of capacitance it can amplify both dc and ac
DC amplifier amplifies what?
A: Amplify DC a1 volt can be amplify to 10volts for example if need be
What is difference between ac and DC amplifier?
AC amplifiers are used to amplify AC signals and use components that handle large voltage values. DC amplifiers are used to amplify DC signals which use small powered electronic devices.
What type of signal to amplify by using differential amplifier?
ac and dc
What is the expected amplification of a BJT transistor amplifier if the dc supply is set zero volts?
very simple, zero.
Ac and dc load line of BJT-explain?
when the dc supply given, dc load line lies in the Ic and Vcc. when the AC supply given, AC load line lies in the Ic and Vcc.
When the forward saturation in Bipolar junction transistor occurs?
Forward saturation in a BJT occurs when the ratio of collecter-emitter current and base-emitter current reaches hFe or dc beta. A that point, the BJT is no longer operating in linear mode.
What is the code that you have to write in simulation programm hspice to take a current-voltage characteristic curve of a bjt transistor?
we will perform a dc analysis over it
What 3 things does an electrical amplifier amplify?
An electrical amplifier amplifies 2 physical quantities according to the transistors used. If a BJT is used it amplifies the current and if a MOSFET is used it amplifies the voltage. Hybrid amplifiers amplify current as well as voltage so in theory , current voltage and power is amplified.
Why do you supply DC power?
DC power supply is used to power the IC's and other active and passive devices.It is provide to amplify the weak signal with the help of amplifiers.
What is the expected amplification of a bjt transistor amplifire if the dc supply is set zerovolts?
A: In mathematics it is learned that any part,number, items,are equal to zero if mulitplied by zero
Why fet is preferred over the bjt?
Disadvantage:Easy to damage when compared to BJT
What are the example current controlled device?
Bipolar junction transistor(BJT)
