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Why is gain affected when the bypass capacitor is open?
Applied input signal at the base of the amplifier appears across the emitter resistor (RE) due to inter electrode capacitance so it should be bypassed the emitter resistor (RE) through the bypass capacitor (CB). unbypassed signal will be amplified (common emitter amplifier) and reverse back from the emitter to the collector through the base, amplified signal from the emitter to the collector (common emitter amplifier) is 1800 out of phase to the amplified signal from the base to the collector (common base amplifier), so reduced the gain.
If the gain of a non-inverting amplifier equals Rf over Ri plus 1 Then what if Rf equals 0 and Ri equals infinite What is this type of op-amp?
It will have a fixed gain of 1. It is known as a voltage follower or a unity gain buffer.
What are the advantages of cascaded amplifier over single stage amplifier?
Cascaded amplifiers offer several advantages over single-stage amplifiers, primarily in terms of gain and bandwidth. By combining multiple amplifier stages, cascaded configurations can achieve higher overall gain while maintaining stability and linearity. Additionally, they can be designed to optimize frequency response across a broader bandwidth, allowing for improved performance in various applications. This approach also enables better impedance matching between stages, enhancing overall signal integrity.
What is the difference between scaling and averaging amplifier?
A scaling amplifier adjusts the amplitude of an input signal by a fixed gain, effectively scaling the signal's voltage level up or down. In contrast, an averaging amplifier computes the average value of a set of input signals over time, providing a smoothed output that reflects the mean of the inputs rather than simply amplifying them. While both types modify signals, scaling amplifiers focus on gain adjustment, whereas averaging amplifiers focus on signal smoothing and integration.
What the conclusion for cascade amplifier?
Over all feedback
What are the advantages of instrumentation amplifier over differential amplifier?
a differential amplifier helps to increase the CMRR which in turn helps avoid unwanted signals that couple into the input to get propagated. IT also helps to increase the signal to noise ratio. furthermore it provides larger output voltage swings.
Why is gain affected when the bypass capacitor is open?
Applied input signal at the base of the amplifier appears across the emitter resistor (RE) due to inter electrode capacitance so it should be bypassed the emitter resistor (RE) through the bypass capacitor (CB). unbypassed signal will be amplified (common emitter amplifier) and reverse back from the emitter to the collector through the base, amplified signal from the emitter to the collector (common emitter amplifier) is 1800 out of phase to the amplified signal from the base to the collector (common base amplifier), so reduced the gain.
If the gain of a non-inverting amplifier equals Rf over Ri plus 1 Then what if Rf equals 0 and Ri equals infinite What is this type of op-amp?
It will have a fixed gain of 1. It is known as a voltage follower or a unity gain buffer.
What are the parameter of power amplifier?
GainThe ratio of the amplifier's output power (delivered to a Z0 load) to the input power (delivered from a Z0 source). Z0 is the characteristic impedance, in this case, 50W.For small signal levels, the output power of the amplifier is proportional to the input power. Small signal gain is the gain in this linear region.As the input power level increases and the amplifier approaches saturation, the output power reaches a limit and the gain drops. Large signal gain is the gain in this nonlinear region. See Gain Compression.Gain FlatnessThe variation of the gain over the frequency range of the amplifier. See Small Signal Gain and Flatness.Reverse IsolationThe measure of transmission from output to input. Similar to the gain measurement except the signal stimulus is applied to the output of the amplifier. See Reverse Isolation.Gain Drift versus Time (temperature, bias)The maximum variation of gain as a function of time, with all other parameters held constant. Gain drift is also observed with respect to other parameter changes such as temperature, humidity or bias voltage.Deviation from Linear PhaseThe amount of variation from a linear phase shift. Ideally, the phase shift through an amplifier is a linear function of frequency. See Deviation from Linear Phase.Group DelayThe measure of the transit time through the amplifier as a function of frequency. A perfectly linear phase shift would have a constant rate of change with respect to frequency, yielding a constant group delay. See Group Delay.Return Loss (SWR, r)The measure of the reflection mismatch at the input or output of the amplifier relative to the system Z0 characteristic impedance.Complex ImpedanceComplex impedance (1+G). The amount of reflected energy from an amplifier is directly related to its impedance. Complex impedance consists of both a resistive and a reactive component. It is derived from the characteristic impedance of the system and the reflection coefficient. See Complex Impedance.Gain CompressionAn amplifier has a region of linear gain where the gain is independent of input power level (small signal gain). As the power is increased to a level that causes the amplifier to saturate, the gain decreases.Gain compression is determined by measuring the amplifier's 1 dB gain compression point (P 1dB ) which is the output power at which the gain drops 1 dB relative to the small signal gain. This is a common measure of an amplifier's power output capability. See Gain Compression.AM-to-PM Conversion CoefficientThe amount of phase change generated in the output signal of an amplifier as a result of an amplitude change of the input signal.The AM-to-PM conversion coefficient is expressed in units of degrees/dB at a given power level (usually P1dB, which is the 1 dB gain compression point). See AM-PM Conversion.
What are the advantages of cascaded amplifier over single stage amplifier?
Cascaded amplifiers offer several advantages over single-stage amplifiers, primarily in terms of gain and bandwidth. By combining multiple amplifier stages, cascaded configurations can achieve higher overall gain while maintaining stability and linearity. Additionally, they can be designed to optimize frequency response across a broader bandwidth, allowing for improved performance in various applications. This approach also enables better impedance matching between stages, enhancing overall signal integrity.
What is the advantage of Drummond instrumentation?
The advantage is that each vertebra segment is fixed, with the risk of nerve injury decreased over Luque rod instrumentation.
Advantage and disadvantage of RC coupled amplifier?
Electrical Engineering It has a wide frequence response .the gain is constant over the audio freq range which is the region of most important for speech music
What Advantages of double tuned amplifiers over single tuned amplifiers?
The primary advantage of a double tuned amplifier, such as, an amplifier with a tuned circuit on the input and the output, is narrow bandwidth. Another advantage to the circuit is impedance matching with the previous stage, etc. And last but not least your double tuned amplifier will have more gain for electrons spent getting the job done. In our battery operated everything world that is an important design factor.
What is the difference between scaling and averaging amplifier?
A scaling amplifier adjusts the amplitude of an input signal by a fixed gain, effectively scaling the signal's voltage level up or down. In contrast, an averaging amplifier computes the average value of a set of input signals over time, providing a smoothed output that reflects the mean of the inputs rather than simply amplifying them. While both types modify signals, scaling amplifiers focus on gain adjustment, whereas averaging amplifiers focus on signal smoothing and integration.
What the conclusion for cascade amplifier?
Over all feedback
Does an amplifier violate law of conservation of energy?
NO. THE UNIVERSAL LAW STILL APPLIES -- ENERGY CANNOT BE CREATED NOR DESTROYED -- ONLY TRANSFORMED. Actually in amplifier we give it the Vcc,Vee,Vbb which is such value from which the gain of an amplifier cannot increase till the point of Vcc,it holds the law of conservation of energy but if gain reaches to Vcc then it is in cutoff region so,never the amplification process violate the law of conservation of energy Actually in amplifer we want the required phase shift+amount of required voltage from sources present so this is actually the use of amplifier that it enhances our strength over particular shape waveform and magnitude at required point
Does the Ovation Celebrity CC2474 need an amplifier or is it really an acoustic bass?
A amplifier may be needed to be heard over other instruments.
