Explain the Schottky barrier lowering and its effect on the reverse saturation current in a Schottky barrier diode.

Design a 4 bit Counter that displays even numbers when a switch on, and odd when the switch off by D flip-flop by training borad

Explain how Time Division multiplexing is used in the real world with an example. Draw the circuit diagram and plot the time domain of the signals which are used. Add the references used for your answer

Create an Op AMP based circuit that converts a 2 Vpp 350 Hz Square wave (Vin) into a 4 Vpp 350 Hz Sine Wave (Vout) that is in phase with the square wave. Show this using Multisim (please attach multisim picture).

Communication Systems/Electronics

Draw the circuit diagram and plot the time domain for flat top sampling using a real world
electronics example. Add the references used for your answer.

could someone describe briefly the two main methods of tuning a PID controlled system and say which one would not be suitable for tuning a critical system such as a power plant. The answer should not be too long (maximum 500 words) and preferably not hand written. Thanks

another method of multiplexing involves the use of tri-state devices.   First of all, how are multiplexers used and second, what are tri-state devices and why do we really care about tri-state device (yes we most emphatically DO CARE.. they are very important).

Sketch a block diagram of the following system. The input should be the desired position in mm, the output should be the actual position in mm. Show the plant to be controlled, G(s), as well as the sensor, H(s), and controller, C(s). All inputs and outputs should be labeled with signal names and units.

Problem Statement:

The 3D print head mass is 2.2 kg.

The structure that raise and lowers the head has a mass of 0.8 kg (including its motor).

The cross arm has a mass of 4 kg.

The design uses an air bearing slide on the cross arm. You may assume the slide is frictionless.

The carriage position is measured by a linear encoder that can be modeled as a continuous sensor.

The team has selected an actuator with a constant ratio between force and voltage: 200N/V

A unity gain amplifier drives the motor and can generate voltages between -24V and 24V

The print head has a range of motion of 0 mm on the left side to 600 mm on the right side.

The filter coefficients of a second-order digital IIR filter are: a0 = 1, a1 = -2, a2 = 2, b0 = 1, b1 = 1/2, b2 = 1/8. (a's are numerator coefficents and b's are the denominator coefficients). Compute the magnitude response |H(ej?)| where ? = 2.721 rad/sec.

Hey can someone explain the transfer function of a oscilliscope, mainly at the point of the RC circuit and the variable input that tunes the oscilliscope for the square wave. that determines the compensation in the oscilliscope.

c)    A 3-phase load draws an apparent power of 80kVA from a 415V 3-phase supply. The power factor of the load is 0.85. Determine the real power supplied to the load and the rms line current?

D) Explain the importance of energy storage for grids that have large amounts of wind power. Name one type of storage system used within a large electricity grid.

E) Explain why AC loads are often rated in terms of their apparent power (VA), rather than their real power (Watts), even though the real power is the only quantity which indicates the actual work done at the load.

Write a VHDL code to use two ultrasonic sensors as detectors, placed one at entrance and other at exit of a parking space. When the ultrasonic detects a car, use a counter to count the cars entering and decrement when a car exits. There is an RGB led place at each gate (entry &exit) which is used to indicate opening and closing of gates. Entry gate LED turns green when car detected and space available. LED stays red when no car detected, or car detected but no space available. Exit LED stays red but turns green when car detected by ultrasonic.

Suppose a 3 ×3 MIMO system (three transmitters) achieves a similar performance as a 4 ×2 MIMO system (four transmitters), which system would you choose?

How can the Hamming error correcting code be improved? what are the improvements and implications?