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Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: 1h, 59m ago  |  Ends: 14d, 22h  |   1 Proposal
You will need to specify wire diameter, number of turns, inductance, insulation, etc. for a transistor used in a power brick. The example circuit the transistor will go in will be supplied.
Category: Electrical       

d****ius
 [?]
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| d****ius
|    United States
Fixed Price: $20 - $60   |  Posted: 4h, 28m ago  |  Ends: 14d, 19h  |   1 Proposal
I have 3 phase 480v electrical into my property, I need to run power out to my site 850 feet away. I'd like to have a 100-200amp service of 1 phase power at the end of the 850ft run. This will be direct burial cable and I would need the EE to look up the Oregon or County specs to make sure the cable selected is suitable. In summary: 1. Size wire according to load and length and 3-phase. 2. Select wire from a discounted source ideally, like ebay 3. Size transformer for 3phase to 1phase 4. Select transformer.
Category: Electrical       

b****s07
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| b****s07
|    United States
Fixed Price: Not Sure   |  Posted: 14h, 47m ago  |  Ends: 14d, 9h  |   12 Proposals
The objective is to design and fabricate one or several circuit board(s) capable of collecting multiple vital signs (ECG, SpO2, Temperature). The design can be a new design or one that is based on an existing reference design if the requirements can be met. If a reference design is used, schematics and demo software/firmware will be provided by the freelancer. The requirements are: - Capable of measuring ECG, pulse oximeter (SpO2), and temperature - Use an embedded 32-bit microprocessor with DSP functionality - Data collection of ECG and SpO2 must be simultaneous or with a low, deterministic latency (<1ms) between ECG/SpO2 samples - Sampling of ECG/SpO2 should occur at a rate higher than 100Hz with a good signal-to-noise ratio - Communication over USB/RS232 to a PC host - Onboard storage for at least 10 seconds of ECG/SpO2 data - Powered by a +5V DC power supply. Preferably a USB port. - A touch or infrared sensor for temperature - Firmware/software program demonstrating the fu...
Category: Electrical       

m****sia
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| m****sia
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Sep 03, 2015  |  Ends: 13d, 22h  |   23 Proposals
Hi, I have at a fair a device that is able to talk to centralised Heat&AC systems (like the ones that you find in hotels) and to control remotely temperature etc.. The device is marketed as a power saver due to the fact that uses ultrasonic sensors to detect the presence of people in the room and shuts down heat/AC or reduces it based on the setting chosen. The device is powered and uses power line network and a proprietary protocol to record power saving (the delta between the power reduced since the absence and what it would have used in power if the device was never in place). I would like to produce this device, right now this little device (15cmx10cm) can not be bough, so I would like to create one to propose to hotels etc... Would you be able to help? How would that work? I am a software person and never tried HW/Electronics before, so I am sorry if this might sound a bit foolish, but I can assure the project is serious and I have intention to find the right partner ...
Category: Electrical       

G****Dub
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| G****Dub
|    United Kingdom
Fixed Price: Not Sure   |  Posted: Sep 01, 2015  |  Ends: 9h, 4m  |   39 Proposals
I have a PCB that needs a redesign + improvement. It will need to be coded from scratch but it's a simple device. Looking for someone who can do it within 2 weeks as it's a priority job.
Category: Electrical       

t****gak
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| t****gak
|    Australia
Fixed Price: Not Sure   |  Posted: Aug 31, 2015  |  Ends: 11d, 4h  |   15 Proposals
Need an EE to review circuit diagram and assist in identifying/specifying referenced missing components and any others that may not be referenced in order to complete/enhance prototype design. Project involves small brushless electric motors used in the hobby industry for radio controlled helicopters, drones, planes, cars, etc. Please inquire directly and I'll share diagram after an NDA is executed.
Category: Electrical       
Skills: Electrical Engineering, Electronics       

c****ko1
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| c****ko1
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Aug 30, 2015  |  Ends: 10d, 4h  |   2 Proposals
We are a cellular repair company that refurbishes phones in the USA. During our time sometimes we break handsets and need help diagnosing the issue and know how to fix it. I am looking for someone that can be on call for us to chat with on Skype or other methods to ask questions about repairs.
Category: Electrical       

c****ess
 [?]
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| c****ess
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Aug 30, 2015  |  Ends: 9d, 22h  |   12 Proposals
I have a small group of electrical prints from an aircraft. I need a particular electrical circuit extracted from all of this and drawn into a picture that we can build off of. If this picture is hand drawn, I'm ok with that. I just need it done correctly. I need this done today. Thanks!
Category: Electrical       

t****oyn
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| t****oyn
|    United States
Fixed Price: Not Sure   |  Posted: Aug 28, 2015  |  Ends: 8d, 1h  |   11 Proposals
we are developing a Fan for the use in the entertainment industry. We need a fan controller that will do the following Very quiet must be a VFD design 100v - 240 v input 120v output motor PSC 1/4 hp to 1 hp Control by pot and DMX 512 pro Small size durable inexpensive to fabricate
Category: Electrical       

j****134
 [?]
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| j****134 *
|    Canada
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Aug 27, 2015  |  Ends: 7d, 9h  |   38 Proposals
I've got a concept for a new electronic product, for which I would like some assistance building a functional prototype. This includes: - Initial review and feasibility - Electronic product design - Prototype design and construction Contact me with examples of your work and rate information. If you have any questions, let me know. Thank you.
Category: Electrical       

y****act
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| y****act
|    United States
Hourly Rate: $10 - $15 / hr   |  Duration: Not Sure  |  Posted: Aug 24, 2015  |  Ends: 4d, 8h  |   4 Proposals
Hi, Are you specialised in energy storage system and have exposure in this field? We are looking for consultant who are well versed in this field and understand the complete supply chain for energy storage system from materials sourcing to project implementation. Danny
Category: Electrical       

d****enn
 [?]
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| d****enn
|    Malaysia
Hourly Rate: $10 - $15 / hr   |  Duration: Not Sure  |  Posted: Aug 24, 2015  |  Ends: 19d, 7h  |   0 Proposals
Hi David B., Are you specialised in energy storage system and have exposure in this field? We are looking for consultant who are well versed in this field and understand the complete supply chain for energy storage system from materials sourcing to project implementation. Danny
Category: Electrical       

d****enn
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| d****enn
|    Malaysia
Hourly Rate: Not Sure   |  Duration: 1-2 weeks  |  Posted: Aug 21, 2015  |  Ends: 20h, 28m  |   9 Proposals
Currently developing a product that features a battery powered heating pad. ...Need to give technical specs for this pad to the manufacturer. ...Need to source wearable battery to power this heating pad. ..Need to define the features of and source switch and controls for operating this device. This job is for an experienced engineer who also has knowledge of suitable sources. Please quote for 3hrs of work. You should be prepared to discuss and clarify on Skype.
Category: Electrical       

A****ntl
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| A****ntl
|    Canada
Fixed Price: Less than $500   |  Posted: Aug 15, 2015  |  Ends: 39d, 14h  |   21 Proposals
I have gerber file for simple frequency generator -need assembly with lcd PIC and digikeypad -need 4 to 10 every week and pay $25 per unit plus shipping-I will send you plastic box to finish unit and mail every week. You must know how to assemble pcb program unit and ship me finished working units.
Category: Electrical       

d****est
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| d****est
|    United Kingdom
Fixed Price: More than $10,000   |  Posted: Jul 14, 2015  |  Ends: 38d, 1h  |   24 Proposals
This job is a large project which can be executed by a single highly competent engineer if required. We realize that this project description falls short of the requirements and will serve as a preliminary requirements. 1) BACKGROUND One of our clients is using a variety of heavy duty machinery to perform testing on packaging. The packaging may, for example, consist of oil drums, plastic drums, tin cans and other materials. These packaging materials are certified by this packaging centre through the following tests (Each test below is performed by a machine in question) a) Load Press - The machinery here performs a "press" upon to a package to see if there are any stress faults or breaks in the package - Machine puts up to 5000kg pressure b) Holding Pull - This machinery tests the plastic straps that are used to "wrap" a package across the horizontal and verticals. c) Hotroom Press - This room consists of heaters and systems that are designed to place a sma...
Category: Electrical       

o****ech
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| o****ech
|    South Africa
Fixed Price: $500 - $1,000   |  Posted: Jun 13, 2015  |  Ends: 6d, 17h  |   13 Proposals
Since I'm often overloaded with work, I am looking for a work buddy. Someone I can trust, and share future projects with. I am very specifically looking for someone living in Davao Region, Mindanao, Philippines. I need to travel several times per year to Tagum City for personal reasons. It would be great to get in contact with some engineers in this area, so we can work together on projects more efficiently. These are the skills I'm looking for: - Circuit Design. You know how to desing electronic circuits (analog and digital), and have preferably some experience with a design program like Eagle, Target3001, ... (or anything similar). - Embedded Software. You know how to program a microcontroller (preferably in C). I myself have experience with 16-bit PIC microcontrollers and will soon learn how to use the Cortex M7 (from ST Microelectronics). Experience with one of these would make our cooperation easier. - IoT (Internet Of Things). For future projects, I will need to focus on micr...
Category: Electrical       
Preferred Location: Philippines

k****ier
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| k****ier
|    Belgium
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