I understand now. I can see how bending the surface slightly can get the light to hit a a focal point. I just played with bending my aluminum foil reflector a bit and could see the beam on the wall as it converged or split in two based on the angle or distance.
This image also shows a good...
Thank you for the advice. I am still trying to grasp how this would work though. At a distance of 50 feet, won't the elliptical structure have to reach past the midpoint to reflect onto the second focal point? At that point, then the reflector would be over 25 feet long. Ideally it would be nice...
I suppose slightly depending on how hard it’s snowing but I’d like to make the source exceedingly powerful to overcome obstacles like that. I 3D printed a parabolic reflector today and wrapped it with aluminum foil. I bought a 1kw 14” quartz tube that if placed properly in the custom reflector...
I have been researching all night and can't find much useful relevant information on this subject. I have gone back to the physics roots and played with ray diagrams and specific heat calculations but all of these theoretical possibilities have tons of real world variables and that's where I'd...
Thank you everyone for the very insightful advice. This will be an ongoing project with many design changes along the way so I will take into consideration everything said. Hopefully it all works out in terms of signal integrity. At this stage I'm still mainly working on getting the LED driver...
I thought of these but I was hoping to not have to put an MCU on each board to control. The PWM signal would control a MOSFET to the string of LEDs directly controlling the visible luminance.
My apologies on the lack of detail.
This is for a new design of an LED fixture. Currently R&D for work but could eventually become a commercial production product. All info is very preliminary at the moment so any suggestions can be incorporated.
I have a prototype made of the LED driver and...
Hello,
Looking for advice/thoughts on a PWM signal going across multiple PCBs. The signal would be relatively slow (1kHz) but I've really only ever dealt with PWM on a single board or cable. The premise of this effort would be to have a PWM control signal and be able to daisy chain multiple...
I have a question regarding the minimum operating speed of new SFP+ fiber modules. In my line of work, I'm most commonly seeing 10GBASE SFP+ modules installed for network data. Can these modules operate at low speed? Specifically with a PHY capable of only a fraction of the data rate?
Further...
Just to clarify, this is not a homework or coursework question.
I was wondering, if you have a large container of salt water and place two electrodes on either side, the current will pass from one electrode to the other through the salt water medium. Is the a way to calulate or 3D model the...
I had to use a network analyzer measuring the standing wave pattern along a transmission line taking data points at half mm increments. The software I used got me the values in a text file and the way it is formatted, I can't figure out how to make the left side the X axis and right side the Y...
α and β are just variables, there is no value to them in the question. u[n] is a unit step function basically making the function true at n > 0 and 0 at n < 0.
The original question is a convolution question x[n] * h[n] in linear systems but what is in the picture is all that is really...
Homework Statement
http://postimage.org/][/PLAIN]
image url
Homework Equations
N/A
The Attempt at a Solution
I have to solve a different question using a similar method to this one but I cannot figure out how they got the sigma notation into the last equation format. I tried writing out the...
I am currently in my second year of college majoring in electrical engineering. I was wondering if getting a PE license is really as difficult as people say it is. I am in one of the top engineering universities. I am not an outstanding student but I do my work and do fairly well and understand...