Advertisements
Advertisements
Question
In a common-base connection, a certain transistor has an emitter current of 10mA and a collector current of 9.8 mA. Calculate the value of the base current.
Advertisements
Solution
Data: IE = 10 mA, lC = 9.8 mA
IE = IB + IC
Therefore, the base current,
IB = IE - IC = 10 - 9.8 = 0.2 mA
RELATED QUESTIONS
Which method of biasing is used for operating a transistor as an amplifier?
In a transistor amplifier, IC = 5.5 mA , IE = 5.6 mA. The current amplification factor β is ______
For a transistor IC = 15 mA, IB = 0.5 mA. What is the current amplification factor?
Explain the working of the PNP transistor?
The output of the following circuit is 1 when the input ABC is
Give the Barkhausen conditions for sustained oscillations.
Explain the current flow in an NPN transistor.
Describe the function of a transistor as an amplifier with the neat circuit diagram. Sketch the input and output wave forms.
For a transistor, the current ratio 'βdc' is defined as the ratio of ______.
In switching circuit, transistor is in ON state. Values of IC and IB are 5.2 mA and 10 µA respectively and value of RC is 1 k`Omega`. If Vcc is at 5.5 V, then VCE is ______.
Ve, Vb, and Ve are emitter, base, and collector voltage respectively for npn transistor in CE mode. Amplifier works for the combination of biasing voltage equal to ______.
In an npn transistor, the collector current is 24 mA. If 80% of electrons reach collector, its base current in mA is ______.
In switching circuit, transistor is in ON state, values of IE and lB are 10 mA and 0.8 mA respectively and RL is 2 k`Omega`. If VCE is 7.6 V, then VCC is ____________.
For a common emitter configuration, if 'α' and 'β' have their usual meanings, the correct relationship between 'α' and 'β' is ______.
In a transistor, doping level in base is increased slightly, the collector current and base current respectively ______.
In transistor amplifier, base-emitter junction is forward biased and collector emitter junction is reverse biased. The current gain is ______.
In common emitter mode of transistor, the d.c. current gain is 20, the emitter current is 7 mA. The collector current is ______.
In common emitter amplifier, a change of 0.2 mA in the base current causes a change of 5 mA in the collector current. If input resistance is 2K `Omega` and voltage gain is 75, the load resistance used in the circuit is ______.
In a study of transistor as an amplifier, the ratio of collector current to emitter current is 0.98. The collector current is 3mA, then base current will be approximately ______.
A common emitter amplifier has a voltage gain of 50, an input impedance of 100Ω and an output impedance of 2000Ω. The power gain of the amplifier is ______.
For a transistor, αdc and βdc are the current ratios, then the value of `(beta_"dc"-delta_"dc")/(alpha_"dc".beta_"dc")`
The transfer ratio of a transistor is 50. The input resistance of the transistor when used in the CE configuration is 1K Ω. The peak value for an AC input voltage of 0.01 V of collector current is ______.
Explain the working of the n-p-n transistor in a common base configuration.
How is a transistor biased for operating it as amplifier?
When an n-p-n junction transistor is used as an amplifier in common emitter mode, ______.
