Name of the experiment:
RC Coupled amplifier (Implementation of the concept of multistage amplifier)
AIM:
To simulate RC Coupled amplifier (Implementation of the concept of multistage amplifier)
Material required:
1. MULTISIM Software Loaded PC = 1 No.
2. Printer = 1 No.
Procedure:
1. Theory
2. Symbol
3. Design Circuit
4 . Simulation Procedure
5. Output Waveform
THEORY:
A Resistance Capacitance (RC) Coupled Amplifier is basically a multi-stage amplifier circuit extensively used in electronic circuits. Here the individual stages of the amplifier are connected together using a resistor–capacitor combination due to which it bears its name as RC Coupled.
SYMBOL:
DESIGN CIRCUIT:
Two Stage RC coupled amplifier circuit Function Generator settings
Two Stage RC coupled amplifier CRO output
Simulation Procedure:
• Open MULTISIM Software.
• Click=> New => Design1
• Click save as in Desk Top rename the Design1 to your circuit multistage amplifier.
• Go to Component tool bar and select the components.
• Draw the above circuits using the components that are available in the tool bar and then save the circuit.
• Double click DC_POWER its value above mentioned, 6V DC.
• Click simulate button or press F5 key => RUN
• Then double click connected in the output of the volt meter and measure input and output voltages.
• Then Change input voltage, again measure and print the output voltages.
RESULT:
Thus the circuit RC Coupled amplifier (Implementation of the concept of multistage amplifier) are designed, simulated and verified through the output with cro.
Questions with answers:
1. What is difference between Amplifier and Attenuator?
Both are linear systems but Amplifier’s gain is more than unity (+ve dB), Attenuator gain is less than unity (-ve dB)
2.Which Amplifier will amplify voltage and current?
common emitter amplifier
3. What are the advantages over single stage amplifier?
In single stage amplifier if we try to get more gain, bandwidth will be decreased viceversa. So get more bandwidth and gain combination we generally use multistage amplifier. but multistage amp bandwidth is less than single stage.
4.what are the classifications of Multistage amplifiers?
Based on Active device used: BJT and FET
Based on type of coupling: RC coupled, Transformer coupled and Direct coupled amplifiers.
5. Define cut off frequency?
It is the frequency at which the gain is 70.07% of it’s maximum or 3dB lesser than maximum
Video Tutorial:
All experiments should be designed and verified through simulation tools like Multisim.
1. Zener diode (Forward and Reverse bias characteristics)
2. Rectifier circuits ( Half wave, Full wave, Bridge rectifier with filters)
3. Power supply with Zener diode as Regulator
4. Common Base transistor output characteristics
5. Common emitter amplifier (Implementation of Current Series negative feedback)
6. Emitter follower (Implementation of Voltage Series negative feedback)
7. RC Coupled amplifier (Implementation of the concept of multistage amplifier)
8. Clippers and Clampers
9. RC Phase shift oscillator (Medium frequency Sine wave generators)
10. Hartley oscillator (High frequency Sine wave generator)
11. Astable Multivibrator (Square or Rectangular wave generator)
12. Gate triggering of SCR with various gate currents.
