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What is the general function of this circuit?

An ac power module connected to a power outlet in Bangladesh is supplying to a Bridge rectifier circuit (lab 8 setup). The output of the rectifier has a frequency of 100Hz. What is the power line frequency (in Hz) in Bangladesh?

For the circuit shown below, Vin1 is a 2 Vpp sine wave with frequency 1 kHz. Vin2 is a 3 Vpp sine wave with frequency 1 kHz. Vin1 and Vin2 are exactly in phase with each other. What would be the observed peak to peak (Vpp) value of Vout? Express your answer in volts, peak to peak (Vpp).     

The following schematic is a linear power supply circuit. If the measured peak-to-peak voltage from node A is , calculate the Vrms of this node. Express your answer in volts (rms).

The figure below shows a first-order active low pass filter.   You are given that C = 33nF and RB = 2kΩ. (a) For a cutoff frequency of 2000 Hz, what value of R should you choose? (Answer to the nearest ohm)

In the peak-hold circuit, select all the following ways to find the time constant.

Name the circuit shown below  

A first-order passive low pass filter usually has one end of the resistor connected to a function generator, and the other end connected to a capacitor to ground. If another capacitor of the same value as the first capacitor is connected across the first capacitor, how will the cutoff frequency be affected?

Calculate the pass band gain (K) for

Here is the design of an active low-pass filter. The value of R = 31.83kΩ Ignoring the output capacitor, what is the cut-off frequency of this active low-pass filter in Hz?