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- A signal source with an open-circuit voltage of Vs=2 mV rms and an internal resistance of 50 kΩ is connected to the input terminals of an amplifier having an open-circuit voltage gain of 100, an input resistance of 100 kΩ and an output resistance of 4 Ω. A 4 Ω load is connected to the output terminals. Find the voltage gains Avs=Vo/Vs and Av=Vo/Vi. Also, find the power gain and current gain.An amplifier has an open-circuit voltage gain of 1000, an input resistance of 20 kΩ and an output resistance of 2 Ω. A signal source with an internal resistance of 10 kΩ is connected to the input terminals of the amplifier. An 8-Ω load is connected to the output terminals. Find the voltage gains Avs=Vo/Vs and Av=Vo/Vi. Also, find the power gain and current gain.FACTS:An amplifier, electronic amplifier or amp is an electronic device that can increase the power of a signal. Classification of the amplifier can be done in 3 different ways. Voltage amplifiers. Current amplifiers. Power amplifiers. QUESTION: You've learned in Module 1 that an Amplifier's Output can be positive or negative which is just natural since we're already dealing with AC signals. But, why do we use negative feedback in Amplifiers?
- The common mode rejection ratio, CMRR of an operational amplifier is a metric used to quantify the ability of the amplifier to reject common-mode signals. Design an experimental setup and explain the steps taken in sequence and equations used to estimate the CMRR of an operational amplifier.A subtractor amplifier can properly subtract signals when The resistors are of any values The input voltages summed up. There is only one input voltage The values of the resistors are carefully chosen Which of the following is not true about non-inverting amplifier? The output voltage is phase shifted by 1800 with respect to the input. There is only one input to the non-inverting amplifier. The differential input voltage is equal to zero. The feedback resistor controls the gain. Which op-amp circuit is used to verify the signal strength that passes through a channel? Integrator Peak Detector Differentiator Precision Full-wave RectifierTwo single-stage capacitively coupled amplifiers like the one in the figure below are connected as a two-stage amplifier (RL is removed from the first stage). Determine whether or not this configuration will operate as a linear amplifier with an input voltage of 10 mV rms. If not, modify the design to achieve maximum gain without distortion. (provide modified design with explanation)
- Which of the following characteristics indicates a practical amplifier design in terms of output impedance? a.Infinite Zo b.High Zo c.Negative Zo d.Low Zo(a) There are three voltage inputs of V1 = 1V, V2 = 3V and V3 = 4V, and three resistors with the value of 4kΩ, 2kΩ and 1kΩ. Design a single ideal operational amplifier circuit to combine these inputs to produce a single output voltage of Vout = -10.5v with a feedback resistor of Rf = 2kΩ. Provide the sketch and calculation for your designed circuit. (b) Figure 2 below shows a cascaded operational amplifier circuit. Determined the value of the output voltage Vout. (c) Figure 3 shows a bipolar junction transistor circuit in common-emitter configuration. Given that VBE = 0.7 v and ß = 110. Determine the current IB, IC, IE and the voltage VCE.(a) There are three voltage inputs of V1 = 1V, V2 = 3V and V3 = 4V, and three resistors with the value of 4kΩ, 2kΩ and 1kΩ. Design a single ideal operational amplifier circuit to combine these inputs to produce a single output voltage of Vout = -10.5v with a feedback resistor of Rf = 2kΩ. Provide the sketch and calculation for your designed circuit. (b) Figure 2 below shows a cascaded operational amplifier circuit. Determined the value of the output voltage Vout. (c) Figure 3 shows a bipolar junction transistor circuit in common-emitter configuration. Given that VBE = 0.7 v and ß = 110. Determine the current IB, IC, IE and the voltage VCE. [9 Marks]
- Which method below is for anti-interference in biopoential amplifiers?All of them are methods for anti-interferenceInstrumentation amplifierDriven-right-leg circuitisolation amplifierVoltage to Current Converter with Floating Load (Not in phase) Design a Voltage to Current Converter with Floating Load. Assuming that you have a 10v input voltage with a frequency of 60hz, Set the Resistor value on the inverting input to 250 ohms, create a circuit where in it will output the opposite phase of the of the original input voltage. Use the proper amplifier on this, which is designed to work as a Precision Operational Amplifier. Take a screenshot of your schematic and the graph of Vin and Current of the Load.What are Amid in dB, fH , fL , and the BW in Hzfor the amplifier described by What type of amplifier is this?