Questions and Answers
Define CMRR (Common-mode rejection ratio)
It is defined as the ratio of differential-mode gain to common-mode gain. $CMRR = \frac{|A_d|}{|A_c|}$
Define VSWR
It is defined as circuit power supply rejection expressed as the ratio of output noise by input noise.
What is a multivibrator and its applications?
A multivibrator is an electronic device used to generate multiple frequencies. It is commonly used in timing circuits, delay circuits, oscillators, etc.
Define inverting and non-inverting Op-amp.
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Define CMRR (Common-mode rejection ratio).
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Define VSWR.
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What is a multivibrator and its applications?
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Define inverting and non-inverting Op-amp.
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Study Notes
Common-Mode Rejection Ratio (CMRR)
- CMRR measures the ability of an amplifier to reject common-mode signals, ensuring that it amplifies only the desired differential signal.
- Defined mathematically as the ratio of differential-mode gain to common-mode gain: (CMRR = \frac{|A_d|}{|A_c|}).
Voltage Standing Wave Ratio (VSWR)
- VSWR quantifies the efficiency of power transmission in a circuit.
- It is defined as the ratio of output noise to input noise, indicating the amount of reflected power in a system.
Multivibrators
- A multivibrator is an electronic circuit that generates various frequencies, making it essential in electronics design.
- Common applications include:
- Timing circuits which are vital for precise time delays.
- Delay circuits used in various control systems.
- Oscillators that produce continuous repetitive signals.
Inverting and Non-Inverting Operational Amplifiers (Op-amps)
- Inverting Op-amp:
- Produces an output signal that is inverted or out of phase with the input signal.
- Non-Inverting Op-amp:
- Generates an output signal that is in phase with the input signal.
- Ideal characteristics of Op-amps include:
- Zero input current, ensuring no power drain from the source.
- Infinite input impedance, leading to minimal loading on previous stages.
- Infinite gain, allowing for maximum amplification of the signal.
Common-Mode Rejection Ratio (CMRR)
- CMRR measures the ability of an amplifier to reject common-mode signals, ensuring that it amplifies only the desired differential signal.
- Defined mathematically as the ratio of differential-mode gain to common-mode gain: (CMRR = \frac{|A_d|}{|A_c|}).
Voltage Standing Wave Ratio (VSWR)
- VSWR quantifies the efficiency of power transmission in a circuit.
- It is defined as the ratio of output noise to input noise, indicating the amount of reflected power in a system.
Multivibrators
- A multivibrator is an electronic circuit that generates various frequencies, making it essential in electronics design.
- Common applications include:
- Timing circuits which are vital for precise time delays.
- Delay circuits used in various control systems.
- Oscillators that produce continuous repetitive signals.
Inverting and Non-Inverting Operational Amplifiers (Op-amps)
- Inverting Op-amp:
- Produces an output signal that is inverted or out of phase with the input signal.
- Non-Inverting Op-amp:
- Generates an output signal that is in phase with the input signal.
- Ideal characteristics of Op-amps include:
- Zero input current, ensuring no power drain from the source.
- Infinite input impedance, leading to minimal loading on previous stages.
- Infinite gain, allowing for maximum amplification of the signal.
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Description
Test your knowledge with this quiz on basic electronics concepts including CMRR, VSWR, and multivibrators. Ideal for students revising key topics in electronics and circuit design. Enhance your understanding and prepare for exams with these focused questions.
