What is the major drawback of an AC amplifier?
Its output is not drifting less. The output changes with the time and change in supply voltage. It has poor temperature stability, due to this its operating point shifts. At low frequencies capacitor fail and act like a short circuit.
What are the advantages and disadvantages of single stage amplifiers?
Advantages:
- The single stage RC coupled CE amplifier is most convenient and least expensive amplifier.
- It provides high audio fidelity.
- It has low amplitude distortion.
- It provides low frequency distortion.
- It has wide frequency response and large bandwidth.
Why CE is mostly used?
⦁ CE is most widely used because it provides the voltage gain required for most of the day to day applications of preamp and power amps. ⦁ The common emitter configuration has the highest power gain combined with medium voltage and current gain.
What is the use of single stage amplifier?
Single-stage Transistor Amplifier When only one transistor with associated circuitry is used for amplifying a weak signal, the circuit is known as single-stage amplifier.
What are the advantage and disadvantage of RC coupled common emitter amplifier?
The RC coupled amplifier offers a constant gain over a wide frequency band. The circuit is very compact and extremely light. It used the resistor and the capacitor which are not expensive so the cost is low. The frequency response of RC coupled amplifier is excellent.
What is the advantage of RC coupled amplifier?
The following are the advantages of RC coupled amplifier. The frequency response of RC amplifier provides constant gain over a wide frequency range, hence most suitable for audio applications. The circuit is simple and has lower cost because it employs resistors and capacitors which are cheap.
Why is negative feedback used in RC coupled amplifier?
❖How negative feedback is advantageous ➢ (i) It improves the stability of amplifier gain ➢ (ii) It reduces the distortion and noise ➢ (iii) It increases the input impedance.
What is the need of biasing a transistor?
Biasing is the process of providing DC voltage which helps in the functioning of the circuit. A transistor is based in order to make the emitter base junction forward biased and collector base junction reverse biased, so that it maintains in active region, to work as an amplifier.
What is the aim of biasing?
The goal of Transistor Biasing is to establish a known quiescent operating point, or Q-point for the bipolar transistor to work efficiently and produce an undistorted output signal.
When a pn junction is forward biased the flow of current is due to?
Hence, electrons are attracted towards positive terminal of the battery and holes are attracted towards negative terminal of the battery. Thus, electrons get captured into the hole and leaves the hole. The process will continued and current will flow due to diffusion of electrons and holes.
When a diode is forward biased it has a voltage drop of 0.5 V?
The safe limit of current through the diode is 10 mA.