DTMF home automation system using ATMEGA8

i need the circuit and the code for the microcontroller

Two loads Z1 = 100+j0 ? and Z2=10+j20 ? are connected in parallel across a 200 V supply. 1) Write a user oriented MATLAB program that will calculate the capacitance of the capacitor connected across the loads to improve the overall power factor to 0.8 lagging,0.9 lagging, unity power factor, 0.8 leading, 0.9 leading. Also MATLAB will calculate total reactive, real power, and the total current at the source for each ste

11. Write a user oriented MATLAB program that will calculate the capacitance of the capacitor connected across the loads to improve the overall power factor to 0.8 lagging,0.9 lagging, unity power factor, 0.8 leading, 0.9 leading. Also MATLAB will calculate total reactive, real power, and the total current at the source for each ste

(In a few sentences)

For An RLC Circuit

1) describe the relationship between the frequency amplitude and phase shift.

ex. as the frequency increases the phase shift....

for an RC circuit

1) desribe the relationship between the capacitance, the pahse shift and the current

A baseband signal s(t) = 10Cos(3000*pi*t + 30) V, is wideband fm modulated (Z(t)) with carrier amplitude of 50V. The index of modulation is B = 4.

a) Show the simplified equation of Z(t).
b) Determine the wideband FM power using Bessel fnc. Table
c) Calculate Kf in the Z(t) equation.

in electric heater, why when we touch it is not conducive?   also how can only the heater heats up while the wire is cold????

You are given a black box containing an RL series circuit. Using only an oscilloscope and a function generator and an extra resistor, what equations would you use to find the following:

Unknown inductor value:

Unknown Inductor impedance:

Unknown black box Resistor value:

Once you have these, mathematically, find a power factor of at least .97 by adding a capacitor in parallel to the black box.

ENG 259 - Technical Writing Newtown Creek Memo Assignment: Rhetorical Context: You are a petroleum engineer working for Enviro-Clean, a company dedicated to cleaning up polluted waterways in urban areas. In March 2017, Enviro-Clean won an $8.5 million New York city contract bid to clean up Newtown Creek, a polluted waterway located on the border between Brooklyn and Queens. In April 2017, you were assigned to the position of Lead Project Manager responsible for overseeing the direction of Project Newtown Creek. In this role, you have been directing three teams of subordinates so that Enviro-Clean can begin the actual clean-up efforts, which the company’s Board of Directors hope will take place before or by September 2018. By October 2017, several months after taking on your project manager role, you have successfully been interacting with your three teams of subordinates. (There were some glitches here and there but, overall, your interaction with the teams has been effective and productive.) You are confident that the clean-up efforts can actually begin in July 2018. Under your supervision, Team A, comprised of other petroleum engineers and a few Human Resources staff members, has been able to subcontract Pure H20, a highly qualified wastewater treatment engineering firm to test and treat the polluted water in the waterway throughout the duration of the clean-up efforts. Team B, mostly Quality Assurance professionals and company attorneys, was able to secure all the required city and state permits necessary to build your clean up facilities on the creek. Team C, comprised of Enviro-Clean mechanical engineers and outside mechanical engineering consultants, was able to design and build the necessary equipment your company will need to perform the clean-up efforts. On October 31, 2017, during a project planning meeting, Susan Canalski, Senior VP of Project Planning, tells you that the Board of Directors will probably be requesting a detailed progress report from you in the coming weeks regarding Project Newtown Creek. In the meantime, she asks you to send her a short memo (less than one page) that gives her a preliminary update discussing what’s been accomplished thus far regarding Project Newtown Creek. Task: Write a clear, concise memo offering an update concerning what’s been accomplished thus far regarding Project Newtown Creek. As you write, consider the above rhetorical information, and decide what should be included and what should not be included. Make sure you are being comprehensive enough without being unnecessarily wordy. Make sure your dates and target audience reflect the rhetorical context. Consider the visual elements of the memo as well as the verbal and consider using bullets to highlight the most important information. Make sure the memo is easy to read and make sure you proofread, proofread, proofread.

Explain, using your own words, how a solar cell works. Please include the description of all relevant physical processes, such as charge carrier generation, recombination, and collection. Include a descriptionof carrier concentration upon illumination.

Length should be 1 page ,12 font, single spaced.

in order to destroy a DNS server what kind of attack can you propose? discuss possible protections to your proposals

What is the advantages and disadvantages of :

- critical sampling.

- over-sampling.

- under-sampling.

Design a sense amplifier for a 4 words of 4 bits SRAM. Using CMOS.

Digital Electronics.

how one of the JFETs acts as the current source that forces I_o to remain constant