Designing Definition and 577 Threads

Designing a better lever After years of use i guess most peoples hands get weaker, my problem is operating the clutch lever on my bike, converting it to hydraulic is for practical and historic reasons out of the question as it is vintage. I have come up with several ideas to increase the...

I don't know if I can get help here, but it's worth trying, I have to design a state table for a sequential circuit, the table looks like this P St Input N St Output A B X Y A B Z 0 0 0 0 0 0 0 1 0 0...

Hi, I am designing a small EV and I am looking forward to some guidlines regarding designing of H-bridge torque controller for controlling somewhat in between 6-8 permanent magnet brush DC motors , the overall power required from these motors is between 70 to 250 W, where 70 W is for normal...

Does anyone know about the parameters that affect the design of fan? For example, is there an optimum number of blades, or optimum curvature and shape for the blade? I suppose this has to do with fluid mechanics (which I know nuts)? Which particular equations am I looking for? Is there any book...

Hi, I had received a tubing drawing from our customer. When studied i found the first 3 points of the tube lie on the same plane.(attached image). Can you please explain the reason for providing this? Please suggest a website or book where I can get more information on tubing design...

Hey all, Well I'm on the home stretch now. I have to build my senior project. Well this isn't really a senior project per se (thats next semester). What I'm taking is a course on "Product Design and Development". It deals with all the functional aspects that go into designing a product: from...

Hi, I would like to calculate the characterics of a magnetic that is excited by a direct current[dc] source. I aim to use a E-core for my design.

"new" sliderule Hi guys, this may not be a regular question but, I am a competitive long range rifle shooter. I would like to make a slide rule type of instrument that takes the known height of my paper target in mils (1 mil is approx 3.6" at 100yards) and converts it to the distance in yards...

Homework Statement I am creating a device to provide 250 to 300 g's of impact force to an electrical device in a plastic housing. I would like to lift a steel plate approximately 16" x 16" X thickness "T",, to a height of "Y" and release it. It would fall at the rate of gravity, impacting a...

I have to build a monorail that can climb a 45 degree slope length of the track is 8m. The mass of the monorail is .3kg and it has to carry a mass of 1kg up the slope.im given a 15V electric dc motor with: Power = 6W at motor stall no load rpm at 0.07 Amp = 3800 stall torque at 0.4 amp = 0.01N...

Hi everyone, I have to design a distributed game of Tic Tac Toe. I have to basically write what would be a good way to design this, but I really don't know much about this stuff, I'd be grateful if some of you could give me some design ideas. Thanks in advance.

How to design 12vdc-220vac 2000,3000,5000 and 10000watts. I need a circuit diagrams and detailed discriptions.Thanks Ismail Dari.

This is my first post here so hello to anybody who reads this! I just finished calculus based physics II this semester and there are a few things I want to design and make for myself to help better my understanding of what I learned in physics. One is device I have seen that generates an...

Hi... I've been seeing a lot of job postings looking for engineers for designing and engineering mechanical building systems such as: HVAC systems, refrigeration systems, fire protection systems, plumbing and piping systems for some new commercial building developments. I am about to complete my...

I am trying to make a circuit that works basically just like a traffic light. I want to use LED's and a 555 timer. So I want the first LED to be lit upon applying a voltage, then I will use some type of switch that activates the next LED to light up and stay lit for a specific amount of time...

Homework Statement Hi Guys, First post, so please take it easy on the noob The problem is designing a MATLAB program for a rocket that has the user enter the following; 1) Launch angle 2) Launch velocity (ft. per sec) 3) Distance to target 4) How high the target location is above...

I am designing a Roll Cage (Using CAD+FE) and trying out new materials for testing/analysis. Commonly used materials i found are: * CDS Carbon Steel * ERW Mild Steel * DOM Mild Steel * Cr (Chrome Molybdenum) Steel * T-45 * 1020 Grade Mild Steel CDW Anybody...

Homework Statement Linear Control Systems - 2006 past paper If I wanted to design a controller with a transfer function of the form \frac{5(s+0.5)(s+2)}{s(s+10)} How would I go about doing so? Homework Equations A constant gain is given as a constant A differentiator...

Homework Statement Designing an FM Radio Receiver. You enjoy listening to KONG-FM, which broadcasts at 96.6 MHz. You detest listening to KRUD-FM which broadcasts at 96.5 MHz. You live the same distance from both stations and both transmitters are equally powerful, so both radio signals produce...

I'm designing a 24V charger at 3A.Can you show me any circuit?Thanks

I am building a robot for a design class. Part of the design includes a wheel base to drive the robot forward. To accomplish this I was going to attach a spur gear system to a wheel axel and drive the input gear with an electric motor. The gears themselves will be made out of acrylic and cut...

Designing a car jack? I have been set a design project in which i am to design a car jack. i am really having trouble starting...so could anyone tell me which kind of car jack would be the best/easiest to deisgn (ie: scissor jack etc - but not a hydraulic one), and also what is the best way to...

Homework Statement Desgin a Parallel-plate capacitor with capcitance 47.0 pF and capacity 7.50nC. You have available conducting plates which can be cut to any size, and plexiglas sheet unsulation which can be cut to any size and machined to any thickness. Plexiglas has a dielectric constanr...

hi, i need help... i am planing to design a small location detection system within a room using RFID tags or some resonace technique. Each object must have a unique identification code. I intend to place 4 detectors like Satellites to determine the exact position of the object... I need...

I'm currently designing the mechanism for a basic cylindrical robot arm. It must be capable of lifting max 2kg of item. The robot arm looks like ST Robotic R19 model. It moves in X and Z direction plus rotation at base and arm. The robot should looks like the attachment below. Can u please...

I'm wondering what is required in terms of design and materials in order to produce a vacuum that is powerful and efficient. I need a vacuum powerful enough to hold a 30 pound weight on a vertical wall (and move around on the wall with wheels)

ideas for EE design project Me and my partner are currently looking for ideas we can implement in a 10-12 week period. Some ideas we chose from our lecturers list are * car finder - when you can't find your car in the parking lot. * audio delay system - for movies that may have a...

Hi all, Has anyone got any good tips on broadband (HF->UHF) somewhat physically compact directional coupler SWR / directional watt-meter designs? I'm also looking for equations or quantitative design parameters relating to their design and operation. Two use cases are of interest...

Homework Statement Choosing from the following resistors values (they may be used more than once), set i[SIZE="1"]s, R[SIZE="1"]1, R[SIZE="1"]2, to obtain V = 5.5 V [1 kilo ohm, 3.3 kilo ohm, 4.7 kilo ohm, 10 kilo ohm] The Attempt at a Solution I wasn't actually sure how to attempt...

If you were to design a distil col and didn't know the feed conditions how would you go about starting. You know xd, xb, xf, R, Eq data. Theres 5 potential q's. Also how would u make enthpy diagram for PS. Thanks.

:redface: 1. i need to design an electro magnet that can lift a 1 Kg weight vertically with the minimum cost possible ANYONE GOT ANY IDEAS and i need it to be very presize i mean the measurements thanx

I was just reading the http://developer.gnome.org/projects/gup/hig/" closes with a list of some common things to avoid: Does anyone know the reason behind the last one? Why and to whom might depicting only hands or feet be offensive or suggest something probably unintended? I can't think of...

hey guys! i need your oppinion and advice/suggestions on somthing. My group for university has to design and build a small model car within the dimensions (300x300x700) mm that runs on air, using a dustbuster motor. i don't have the model name but we can assume the motor we're dealing...

Homework Statement Not really a HW question but say we follow the steps in converting a state diagram down to its excitation table - how do we determine whether the best ckt implementation would be best implemented with either a mealy or a moore system Homework Equations mealy : state...

i need some help. i am supposed to design a vehicle that is powered only by one standard rubber band to transport an egg to the greatest possible horizontal displacement without breaking the egg. the vehicle can't have any rotating parts. must be constructed from basic parts (ie not...

Homework Statement Given an ideal power supply of 15 V and a load of 5 kilo ohms, design a circuit using 2 resistors in which the current flowing through the load is close to 2mA Homework Equations None given (I'm assuming V=IR) The Attempt at a Solution I'm a bit confused...

Here is the exercise from the book: -------- You are asked to design a system for numbering TV programs to facilitate the programming of VCRs. Each program should be assigned a number so that a VCR can determine the day of the week, starting time, ending time and the channel of the program...

well,im thinkin of designing an eraser,specifically the conventional chalk eraser, that can act like a vacuum cleaner,in the sense that i would have to put a motor in it,for the reason that the user would have to use a lesser effort for him to erase something,nd no chalk dust...well u could say...

Homework Statement I was asked to desing a RC passive high pass fiilter with a cutoff of 3KhZ. Homework Equations The formula for Fc = 1/(2piRC) The Attempt at a Solution I set 3kHz = (1/(2piRC)) but am not sure what to do next. Do I pick a random cap or resistor value and...

Designing folding legs for a bunk bed... Im having trouble finding a suitable hinge mechanism which would allow 2 legs under a bed to be locked and pulling them down into a vertical position they would lock. Does anyone have any ideas or links to a suitable hinge design. Thanks

Homework Statement Imagine a mousetrap car with weapons, and that is my physics project for you. It is essentially a 8 foot long hill (8% grade on each side), with opponents' cars facing each other, racing up, and trying to go over the crest and force the oppenent's car backwards or off...

Homework Statement Doing a science project for school. I have a fish tank and a divider separating one colored liquid on one side and another colored liquid on the other. I need it air tight initially, but will later remove the divider to allow the liquids to mix, demonstrating diffusion...

Homework Statement A world-class runner can complete a 100 m dash in about 10s. Past studies have shown that runners in such a race accelerate uniformly for a time tu and then run at constant speed for the remainder of the race. A world-class runner is visiting your physics class. You are to...

im to design something, a plane, or any kind of material to let it stay from the time of release up to it falling into the ground for 13 seconds provided that it is powered by a rubber band... i'm having a hard time thinking about it, having it stay in mid-air longer than usual, and just want...

Hi there, I plan to build a ROV, and am currently looking at different methods of propulsion. I do not wish to use `o` rings or seals and have considered magnetic coupling for the propellor to the electric motor, or even hydraulics. Cost is an issue. Would appreciate any advice on building a...

...the puppy that never grows old, bug DNA kits for designing your own bugs, Control Genes [found in every dictator], Orangutans who can speak English, Spanish, or Japanese, and ear enlargements for improved hearing are just a few of the wonderful new products available from Michael Crihton's...

Basically our task is to design a inclined manometer. with these parameters : the maximum pressure: 7875pa minimum pressure: -3200. what I am struggling on is calculating the angle that the manometer should be inclined at. Another parameter that is given is that the angle must be between 0-45...

I need some help designing a Digital elevator simulation using multi media logics. I need some help and guidelines as to how I should get the thruth diagrams, kmaps and the circuit going. I am required to design a digital circuit which has applications in elevator style controls. My circuit...

Im designing a bunkbed for a caravan and I am struggling to find information about certain mechanisms I could use to support a folding bed against a wall. Please could you offer me some links and advice. Thanks.

need urgent help! I have to make a rocket car - powered by a balloon - demonstrating Netwon's Third Law. It must be made with a styrofoam meat tray for the base and wheels, and a straw to blow up the balloon. How can i design it so it goes the furthest distance? What shape should the base be...