Designing Definition and 577 Threads

Hello, I have a specific application where I need a custom lens designed to focus an image onto a very small cmos image sensor. So far, I've figured out the general angles of the lense but I need it to be a perfect design before money is put into prototyping it. Here's the specs: The image...

hi, I'm designing a controller for quadroto with MATLAB and I'm using SIMULINK to do this. In the embedded function I have to define the initial values so that the velocities take initial values but then in the embedded function the derivative of the velocities is calculated and then there is...

So, I'm still working on designing an exhaust. The engine I'm using is the VR6, non-turbo, etc. I want to design the exhaust only under full throttle. This way I can over-design the exhaust rather than under-designing it. I'm really not sure how to find the velocity of the exhaust as it...

Designing 8-bit Binary to BCD Converter I have to design and implement an 8-bit binary to BCD converter **using only ICs** I have an algorithm that works just fine in converting an 8-bit binary to BCD that can be sent to three 7-segment displays. It is called the double dabble method. Please...

Hey I currently have a project to design an engine and I have chosen to design it for a moped. My research so far has brough me to this: Based on this, how would you guys recommend me proceeding to design the engine? Do I start with the links? From your perspective, what's the best link...

is it possible to progress from being aircraft maintenace engineer or technician to become a designer like thermodynamicist, propulsion, aerodynamicist, systems engineer ...etc? i mean is there such a further study courses that will upgrade the maintenance engineer/technician to a professional...

i am trying to design a switch that will output an active high if the width of the received PWM signal is greater then 1500 uS. if it is shorter then this time then it should output an active low. The frequency of this signal is 50 Hz. I designed a RC circuit with a cutoff frequency of 50...

I'm having a problem determining the upper and lower halves of a karnaugh map when trying to design a counter using flip flops. So where I am at is, taking a 4 bit table with the next state included, putting it into a next state map and then in the J-K, and S-R flip flops tables. I know the...

Hi, I want to ask this question. Why do lecturers select the problems they select in the problem sets? I don't understand why those problems have to be selected and not any others.

Hi, ***I just noticed this that I posted this in the wrong section thinking I was in the engineering forum...sorry!*** I'm designing a racking system to store sheet metal coils (see attached sketch). I calculated the I and S values required and according to my calculations, 4 x 4 x 3/8...

Greetings! We are designing a very basic two tank system with water flowing in one tank, and out the other. As illustrated here: We have come up with two equations, which should be pretty self-explanatory. W is waterflow, A is area, h is the water level and so forth. As you can see, we...

I need to design a scale. It is a simple 2-D problem. All you need to know is that it's a plate on a vertical spring. Each end of the plate slides a little ways into an indent. It is a scale for weighing ingredients in a bakery. A weight of 22lbs (+or- .25 lbs) is acceptable. If there isn't...

I'm planning to design a PIR motion sensor. I wanted to know if I can use ordinary class-A amplifiers to amplify the output of the sensor which will be given to the alarm circuit. The transistor I'm planning to use is BC-547

hi guys am designing a trolley hydraulic jack .. am asked to do a lay out of the arm lifting the wieght .. would you help me how to do good lay out of my lifting pad??

Just wondering how would one design a comparator using just discrete BJTs.

Hello Guys! I was designing copper bus-bars which can withstand 1 kA current. Actually I am going to discharge a several DC capacitors into those bars. So, I was confused in the dimensioning the cross section. Is 25mm * 3mm cross section enough? I have made my calculation using 1.6 A/mm2...

Homework Statement In this lab, we are supposed to design and build a multi-page schematic for the operation of an 4-bit arithmetic logic unit (ALU) capable of performing addition (ADD), negation (NOT), and bitwise AND (using Mutlimedia Logic). You will then build a memory with four lines...

Hello, I'm a third year chemical engineering student and i have to design a shell-and-tube heat exchanger. My two fluids are: - Tube side: Acetic acid at 8.90kg/s (from 303 to 343K). - Shell side: Water at 2.5kg/s (from 350 to 310K). This is my problem: When i want to find the correlation...

Homework Statement I am trying to design a workshop crane and have found a considerable success so far. It is a maximum 2 ton crane and i have found which I beam to use by the method mentioned below. Some of the specifications are boom length(span) = 3 m mast length(vertical portion) = 4...

designing a physics experiment! Homework Statement need to make an experiment considering the relevant physics to investigate any physical property of this: http://www.worcestercitymuseums.org.uk/coll/ethno/ethimp/ethimp2.htm The Attempt at a Solution I thought about an outdoor...

Homework Statement You are to design a coating to enhance the detection efficiency of a silicon detector (n=3.42 at \lambda=351nm) (a) Is the coting a reflection or antireflection coating? (b) Should you use a higher or lower index material for the coating? Specify a material to use. (c)...

Homework Statement I need to design a lab that will give me 5 points that produce a constant slope. Homework Equations I want to use the equation for emf E=Blv I would re-arrange it to make E/Bv = l Where B and v are my constantly increasing data points, E is measured by some sort of...

I've picked up a 13.56 MHz RF generator from eBay which I plan to use for an ICP plasma project (this is what it was designed for). I need to construct an RF coil and parallel capacitor with a resonant frequency of 13.56 MHz but I also need to construct an AMU as, as I understand it, as soon...

hi guys, today i got the hugest brainfade I've ever gotten before. I'm designing a small 2-2-1* audio switch for a friend of mine and i totally forgot which switch i should use. any tips? *note, 2 input(360, pc) to 1 output (speakers)

I need to make an impedance matching circuit using microstrip lines. Zin --> MATCHING CIRCUIT --> ZL The input impedance (Zin) is 50Ω. The impedance at the load is 50 - j 500Ω. Design frequency of 900MHz. The board I am required to use is the Taconic RF-35. It has a thickness of d = 1.524mm...

Hi, I am trying to design a "dehumidification system" for my home; I use quotes because this not really much of system, I am simply deciding what rating of a portable dehumidifier to buy! This is my first real world HVAC application and I wanted to know if what I am doing really makes sense...

Hi. I apologize if this is an unwelcome intrusion, but I need help from folks such as yourselves. I know nothing about calculus, but a friend of mine does. I would like to design a kind of riddle or scavenger hunt in the form of a calculus problem which, when solved, would result in a...

For a cyclotron application, I want to make a magnetic circuit using permanent magnets. The attachment shows a diagram of the circuit. It has two neodymium magnets "in series" and mild steel bars extend to duct the circuit around to two disk shaped pole pieces (red and blue). The diagram is...

I'm working on a project that has a 13.56 MHz RF power source. The thing is, the EM waves emitted by this power source cause problems with the diagnostic equipment of the actual experiment (various capacitive and inductive sensors). So, I am planning to build a faraday cage to shield the...

Ive got a beam that I can't seem to calculate the loading of. Let's say beam ABC supports are at A & B, BC is a cantilever. There is no wall on AB, but there is a wall on BC. Now I have tried breaking it up into separate parts, but does not look right. I was taught the method of triangles and...

Hi everyone... i have to design the frame of a moon buggy, which is a manually powered vehichle for 2... it is somewhat similar to the frame of FSAE cars... but the problem is... i don't know from where to start... i have ideas... but to design a proper frame... i need some study material...

When designing a core lattice, which one of the thermal-hydraulics and neutronics consideration are important?

As a fun project, I'm trying to design a mechanical machine as simple and elegant as possible to "crease up" a round flat piece of dough around a meatball. Any suggestions how this could work? If you know a better place where I should ask for help, please tell me. P.S. You will notice that in...

do u all mind sharing with me what are the steps needed/ the procedures to design a capacitor? Its like I've been given only its electric field intensity. And is required to find out the capacitance... mind chip in some ideas for me? btw, I am designing a parallel capacitor. relevant equations...

Hi, I am required to design a monostable multi-vibrator suited for high frequency 200MHz. I am currently referring to this site http://www.play-hookey.com/digital/experiments/rtl_monostable.html for my design, however, it seems that this is only made for low frequencies. What should I do in...

hi everyone, I'm a mechatronics student. I'm sorry i posted this question here. I hope i can get some tips/answers/designs(rough design) http://i101.photobucket.com/albums/m62/minmonster57/Robot_Arm_Design.png I'm having this Robot building project. And faced a designing problem, This...

hi, i am a mechanical engineer currently working on the design of a UAV. Our rough sketch kind of resembles Burt Rutan's Long-EZ or Velocity. I am attaching a couple of sketches of the aircraft which my team and i have constructed using XFLR 5. We will also be using XFLR 5 and Profili for...

Hi, I am a first year undergrad, and for my research, I was asked to design a monoflop (monostable multi-vibrator) which takes in a sine wave, and outputs two square waves which are corresponding to each other (one is on while the other is off, and vice versa) I was told to refer to the...

Homework Statement I need to design a windmill in a competition that can produce the maximum power given every participant has the same gears and dynamo. so basically we have to concentrate on the blade's design. What is the best design and its orientation on the rotor. Also what type of...

I need a bandpass with the following specs: Center frequency around 30kHz fixed. Passband width a few Hz Steep slopes, phase doesn't matter preferably passive but active would work too especially if it spares me from inductors with ferrite cores (we have stray magnetic fields...) Can...

Homework Statement The task is to design a MATLAB program reminiscent of the text-based lunar lander games. Ol, that's not that bad. My problem comes from the research, specifically determining what thrust will be provided from what rate of fuel burned. I know that thrust=(dm/dt)v where v is...

I was given this problem as an excercise in thermodynamics and to better understand powerplant systems. I am having difficulties because as a civil engineering student I haven't taken a lot of thermodynamics. The one course I did take was several semesters ago and wasn't that advanced...

hye.. i'm working on my FYP project on designing and building a rocket controller which will react on altitude change thus shifting the angle of its fin to make sure the rocket fly to the right altitude. can anyone help me with the topic?

I am trying to design a tone generator similar to those used in telecommunications applications (ex: http://www.tessco.com/products/displayProductInfo.do?sku=89724&eventPage=1) The probe (inductive amplifier) can be used on any tone generator, so I plan to use it with mine. So far, I have...

hi everyone... i am dong my project designing a 3d solid state hi everyone... i am dong my project designing a 3d solid state accelerometer.The accelerometer should detect and measure steps. Can anyone of you help regarding the design of it...

I want to make a career in web designing and internet area, so which course should i take Btech computer engineering / Btech software engineering / or Btech Information Technology Which is most preferred today for jobs?

Hi everyone: I am new to PCB design, I want to how know often do you use autoroute, or just route the trace manually. Someone tell me that, they route most of the traces automatically and then modify it manually. Thanks

Hello all! I must design an ac ammeter which uses successive approximation ADC,has a specified voltage of 0,15V and individual entrance resistors for measuring currents of 200mA,500mA,1A. Any suggestions on how to build such a device would be highly appreciated!

please help me ,i have a project which i m not easy with can anyone help me in designing a a vapor compression cycle for cooling in the summer and if desired heating in the winter, and a ground source heat pump for cooling in the summer and if desired heating in the winter.

Okay, I want to add a filter onto the end of this circuit with the transfer function: \frac{1 - 3e^{-sT} + 3e^{-2sT} - e^{-3sT}}{s^{3}T^{3}} (T is the sampling period) I'm using PSPICE. The denominator seems simple enough to implement, just 3 op-amp integrators in series (right?), but...