Advertisements
Advertisements
प्रश्न
Under what condition does the transistor act as an amplifier?
Advertisements
उत्तर
The transistor acts as an amplifier when the input circuit ( emitter–base) is forward biased with low voltage VBB and the output circuit ( collector–base) is reverse biased with high voltage VCC .
APPEARS IN
संबंधित प्रश्न
Draw a circuit diagram of a p-n-p transistor and explain how it works as a transistor amplifier
Draw a circuit diagram of a transistor amplifier in CE configuration.
Define the terms : Input resistance How are these determined using typical input and output characteristics?
Draw a circuit diagram for studying the input and output characteristics of a n-p-n transistor in common emitter configuration. Using the circuit, explain how input, output characteristics are obtained
Gautam went for a vacation to the village where his grandmother lived. His grandmother took him to watch 'nautanki' one evening. They noticed a blackbox connected to the mike lying nearby. Gautam's grandmother did not know what that box was. When she asked this question to Gautam, he explained to her that it was an amplifier.
(i) Which values were displayed by the grandmother? How can inculcation of these values in students be promoted?
(ii) What is the function of an amplifier?
(iii) Which basic electronic device is used in the amplifier?
Figure shows a block diagram of a transmitter identify the boxes ‘X’ and ‘Y’ and write their functions.
Figure shows a block diagram of a detector for amplitude modulated signal. Identify the boxes ‘X’ and ‘Y’ and write their functions.
Draw a circuit diagram for the common emitter transistor amplifier. What is meant by phase reversal?
Write the truth table of the following circuit. Name the gate represented by this circuit.
A pnp transistor is used in common-emitter mode in an amplifier circuit. A change of 40 µA in the base current brings a change of 2 mA in collector current and 0.04 V in base emitter voltage. Which of the following is the correct value of the input resistor Rin?
