Aim: To calculate the voltage gain and to observe frequency response of RC Coupled amplifier. Apparatus: Transistors, BC , 2 No's. Experiment 2. RC Coupled CE Amplifier. OBJECTIVES. - To provide the student with all aspects of the frequency response of capacitor-coupled BJT amplifiers. Experiment No. -1 Aim: To Plot the Frequency Response of a single stage RC Coupled Amplifier with feed back and without feedback and find the following: 1.

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This is most popular type of coupling as it provides excellent audio fidelity. The voltage across collector and emitter will be 0.

## Experiment No. -1 Aim: To Plot the Frequency Response of a single

That is why proper biasing is required for the proper operation of a rc coupled amplifier experiment amplifier. It prevents any DC voltage from entering into the succeeding stage from the present stage. If this capacitor is not used the output of the amplifier Vout will be clamped by the DC level present at the transistors collector.

Rc is the collector resistor and Re is the emitter resistor.

This is done to ensure that the operating point is positioned at the center of the load line. Ce is the emitter by-pass capacitor. At zero signal condition i.

## Electronic Devices and Circuits Lab Notes: RC Coupled Amplifier |

This current is a direct current of magnitude few milli amperes and Ce does nothing. The band width of a good audio amplifier must be from 20 Hz to 20 KHz because that is the frequency range that is audible to the human ear.

The frequency response of a single stage RC coupled transistor is shown in the figure below Fig 3. Points tagged Rc coupled amplifier experiment and P2 are the lower and upper half power points respectively.

RC coupled amplifier frequency response Rc coupled amplifier experiment.

Gain of an amplifier is the ratio of output power to the input power. It represents rc coupled amplifier experiment much an amplifier can amplify a given signal. Gain can be simply expressed in numbers or in decibel dB. Here Pout is the power output and Pin is the power input.

Where Vout is the output voltage Vin is the input voltage, Pout is the output power, Pin is the input power, Rin is the input voltage and Rout is the output resistance.

### Experiment No. -1 Aim: To Plot the Frequency Response of a single

Compare it with voltage gain obtained rc coupled amplifier experiment second stage was connected. As you know there are three transistor configurations that are used commonly i. In common base configuration has a gain less than unity and common collector configuration emitter follower has a gain almost equal to unity.

Common emitter follower has a gain that is positive and greater than unity. So, common emitter configuration is most commonly used in audio amplifier applications.

• Electronic Devices and Circuits Lab Notes: RC Coupled Amplifier |
• Experiment No. -1 Aim: To Plot the Frequency Response of a single
• Experiment No. -1 Aim: To Plot the Frequency Response of a single
• Experiment No. -1 Aim: To Plot the Frequency Response of a single
• RC Coupling Amplifier
• Construction of a Two-stage RC Coupled Amplifier
• Experiment No. -1 Aim: To Plot the Frequency Response of a single

In this article, we learn more about transistor amplifiers. A good transistor amplifier must have the following parameters; high input impedance, high band width, high gain, high slew rate, high linearity, high efficiency, high stability etc.

### Experiment No. -1 Aim: To Plot the Frequency Response of a single

The above given parameters are explained in the next section. Input impedance is the impedance seen by the input voltage source when it is connected to the input of the transistor amplifier. In order to prevent the transistor amplifier circuit from loading the input voltage source, the transistor amplifier circuit must have high input impedance.

Resistances R1, R2,Re form biasing and stabilization network. If it is less rc coupled amplifier experiment 3 dB it cannot be detected.

Connect the circuit as shown in the diagram.