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LED Driver circuit

$1500-3000 USD

Suljettu
Julkaistu yli 8 vuotta sitten

$1500-3000 USD

Maksettu toimituksen yhteydessä
I’m looking for resources that will help complete a small circuit design within the next few weeks. Let me explain the application; we are building a web process measurement/control instrument that will look at a moving ribbon of material. There will be about 40 illuminators across the web. Each illuminator will have one Luxeon LumiLED. We plan to build about 5 of these measurement systems. The illuminators are to have the following characteristics: • Luxeon MZ (LMZ0-RR00) (royal blue) • 6 volts forward bias • 8Hz flash rate • 1ms flash duration (approximate) The drive current needs some flexibility. When the instrument is first manufactured we need to set the brightness level of all of the illuminator pods to match. Once set, this level should not drift. Our overall instrument design controls the exposure of the cameras and the on-time for the illuminator to make sure that the illuminator is on when the camera exposure is started and the camera exposure is ended before the illuminator is turned off. We need to be able to adjust the brightness level of each pod with a fineness of about 100 parts per full-scale illumination. The illuminator enable/disable (on/off) signal is daisy-chained from LED-pod to LED-pod with an RS-422 transceiver. The power is daisy-chained as well. RJ45 connectors are used to convey the enable and power signals. The circuit we have used in the past, does not have the brightness adjustment needed in our new design. We have used Maxim chips in the past. You will see in our old design a Maxim driver, thermal shutdown, and RS422 transceiver.
Projektin tunnus (ID): 8390037

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7 ehdotukset
Etäprojekti
Aktiivinen 8 vuotta sitten

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7 freelancers are bidding on average $1 928 USD for this job
Käyttäjän avatar
hi sir We are team of professional engineers. I have read the details of your project and I assure you I can do it for you. We have almost 8 years of experience in the design of electronics circuit, product prototyping and firmware development services. I assure you quality work and on time delivery PLEASE GIVE ME A CHANCE TO PROVE OURSELVES. We believe in relations money is secondary thing to us please discuss if you have any issue with price or delivery time. I am waiting to hear from you soon Regards
$1 500 USD 15 päivässä
4,9 (40 arvostelua)
5,3
5,3
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Hello! How are you! I think I have the skills you need for this project! Please look at my profile and also send me a message! Have a nice day!
$1 500 USD 14 päivässä
5,0 (54 arvostelua)
5,4
5,4
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Hello, I have been associated with Hardware design (Circuit / Electronics design), PCB design, PCB Manufacturing, Component procurement, PCB Assembling and Functional testing for over 7 years. I have used various CAD/EDA tools for PCB design. Would you prefer any specific EDA tool for PCB design (or) any tool is okay? I will provide the PCB Manufacturing, Component procurement, PCB Assembling & Functional testing services too. I would like to take this up and are fully equipped to deliver the required files. So, if you'll give me a chance to take part to your work, I will respond in the same manner, handling you good quality projects, as soon as possible. I look forward to hearing from you! Wish you a nice day! Thanks & Regards, Karthik
$3 000 USD 15 päivässä
4,9 (41 arvostelua)
5,6
5,6
Käyttäjän avatar
Hello I am a talented Electrical Engineer and Electronics Scientist looking to be hired. Throughout my career I have been working with Electrical Engineering, Electronics and Engineering for many companies around the world. I have also worked as a Microcontroller Programmer and PCB Layout Designer. I have had dramatic results with my previous employers and promise to deliver the same for your company . Also have strong experience of designing circuits . I am ready to be hired by you.
$3 157 USD 30 päivässä
5,0 (8 arvostelua)
4,6
4,6
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A proposal has not yet been provided
$1 666 USD 30 päivässä
4,3 (6 arvostelua)
4,2
4,2
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A proposal has not yet been provided
$1 500 USD 30 päivässä
4,9 (3 arvostelua)
3,1
3,1
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A proposal has not yet been provided
$1 666 USD 30 päivässä
0,0 (0 arvostelua)
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Tietoja asiakkaasta

Maan UNITED STATES lippu
Madison, United States
5,0
2
Maksutapa vahvistettu
Liittynyt helmik. 13, 2014

Asiakkaan vahvistus

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