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Convert 7.4v to 5v, or 7.4v to 12v

$10-30 USD

Cancelled
Posted almost 7 years ago

$10-30 USD

Paid on delivery
I have a rechargeable battery source that can output 3.7v, or 7.4v. And I have a device that can work with either 5v or 12v input. What is the best way to make the device work? What convertor should I buy?
Project ID: 14492535

About the project

29 proposals
Remote project
Active 7 yrs ago

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29 freelancers are bidding on average $24 USD for this job
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Design a converter or else select a off the self converter for 5V /12V to convert from 3.7V to 7.4V Relevant Skills and Experience Hi, I am a post graduate power electronics engineer and having very good industrial experience of 8+ years in R&D and project development. I am excellent welding power supplies design. Proposed Milestones $55 USD - Design cost what is the current rating of the device,based on it we can select the converter
$55 USD in 2 days
4.9 (47 reviews)
6.4
6.4
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I am an Electrical Engineer having specialization in Electronics and Control, teaching at Electrical Department FAST National University Pakistan. I am also persuing my MS degree in Electrical Engineering with specialization in CONTROL. I have taught the followings courses, and also done many projects related to these subjects as well as related to consumer electronics products. 1. Control System Design & Modelling (Continuous, Discrete, Linear, Non-Linear, Optimal, Fuzzy Logic + Matlab & Simulink) 2. Digital System/Logic Design (Verilog, VHDL, Logisim) 3. Digital Signal Processing (MATLAB) 4. Micro-controllers (8051, Arduino, PIC) 5. Power Electronics (PSIM, MATLAB, PSpice) 6. Control of Electric Machine Drives 7. Circuit Analysis and Designe etc 8. PCB Design (Proteous + Ultiboard + Altium Designer) I assure you, if you assign your project to me, you surely gonna work with me in future. Note: I also provide the services in Mechanical Engineering Projects.
$50 USD in 3 days
4.8 (148 reviews)
6.6
6.6
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Hi I am interested to your project. I am familiar with electronics, PIC microcontroller, Power supply as well as PCB design by Eagle. Thanks. Relevant Skills and Experience step down/up converter design Proposed Milestones $30 USD - schematic with BOM
$30 USD in 1 day
4.9 (52 reviews)
5.2
5.2
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$25 just for the discussion about good product and better run time from battery etc. Will share my contact too so in case if you need further assistance etc. Relevant Skills and Experience Over 25 years in electronics Proposed Milestones $25 USD - Just for getting in touch to discuss various points Additional Services Offered $1 USD - If needed I can design with best components as well. We can discuss about that Do let me know. Thanks
$25 USD in 0 day
5.0 (22 reviews)
5.1
5.1
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Hi, I have experience in electronics. I can help for your project. Regards. Relevant Skills and Experience Electronics Proposed Milestones $30 USD - Milestone
$30 USD in 1 day
5.0 (9 reviews)
5.2
5.2
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Dear Valued Employer, My name is Martin Botsov and I am an engineering physicist with extensive experience in the field of circuit design, circuit prototyping and PCB design. Relevant Skills and Experience Circuit Design PCB Layout Component Library creation Research and Development Problem Solving Design for Manufacturing Physics Electronics Over 10 years of experience in the electronics industry. Proposed Milestones $29 USD - Electronics consultancy services Don't hesitate to contact me with questions regarding any details around your project. Buck-Boost
$29 USD in 12 days
5.0 (12 reviews)
5.0
5.0
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Hi, Please share all your project requirements like Power/Current/Temperature so we can suggest a suitable converter. About us: Micro-controllers we have worked on PIC, STM32, PSOC and AVR. Development kits and instruments available for testing purpose. For PCB designs we use KICAD. C#, LABVIEW, Python for GUI, Controlling or Datalogging purpose. Thanks and Regards, Santosh
$35 USD in 1 day
4.8 (5 reviews)
4.0
4.0
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Hi I don' t think there a device does this conversion, you need simple circuit to do this Message me and i design for you Regards
$25 USD in 3 days
4.9 (4 reviews)
3.3
3.3
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Hello. I have the same problem few years ago research a lot information and know I coud reccomend best convertor solve to you but I need more details about you power consumption. Relevant Skills and Experience Hardware, Arduino Proposed Milestones $15 USD - For nice and described reccommendation with links Additional Services Offered $5 USD - Find the great price for item that you need How much mA you need at output after converter?
$15 USD in 1 day
5.0 (2 reviews)
2.8
2.8
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Hello I am an Electronics engineer and I am willing to help you. the best option or probably the efficient method it to use DC-DC converters. or you can rearrange the battery to provide close voltage Relevant Skills and Experience I have handled various converters from few watts to 1 KW. contact me over chat for detailed calculations and information. Proposed Milestones $15 USD - detailed consulting with walk through what is the power consumption​ of the device?
$15 USD in 1 day
5.0 (2 reviews)
2.9
2.9
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good Relevant Skills and Experience system design Proposed Milestones $35 USD - 35
$35 USD in 1 day
4.9 (2 reviews)
2.9
2.9
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I’m a young engineer , working in electrical engineering and electronics industry. i can do your job in one day with a highest quality and cheapest price Relevant Skills and Experience a voltage regulator is a basic circuit in electronic and i have already do a lot of project like yours Proposed Milestones $15 USD - circuit diagramme
$15 USD in 0 day
5.0 (2 reviews)
2.2
2.2
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hi, i read your problem there is lots of possible solutions for this. the cheapest solution is to use a regulator which will cost you less then 1$. i can design a circuit to convert 7.4 voltage to 5v. Relevant Skills and Experience i design many buck and boost converters. if your device take current less than 1 ampere then soltuin will cost around 2 to 3 dollars but if device take more current then you need other converter. Proposed Milestones $5 USD - circuit diagram $10 USD - proteus simulations Additional Services Offered $20 USD - i will provide pcb design if needed. Please let me know current rating of device also. thank you.
$15 USD in 1 day
5.0 (1 review)
1.9
1.9
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hi, a simple boost converter will work perfect. But you need to find a boost converter with 3.5 volt min input. I have used such a converter.
$15 USD in 1 day
5.0 (1 review)
1.3
1.3
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A proposal has not yet been provided
$20 USD in 1 day
5.0 (2 reviews)
0.6
0.6
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I need to refer suitable converter to adjust the input voltage to required output. Relevant Skills and Experience Electronics is my core subject and I have taught it to Electrical Engineering students at University level. Proposed Milestones $30 USD - project
$30 USD in 1 day
0.0 (0 reviews)
0.0
0.0
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I can give you a very simple and cheap solution within one day Relevant Skills and Experience I am Electronics engineer with 3 years experience Proposed Milestones $15 USD - Pay after completion Additional Services Offered $1 USD - NA
$15 USD in 1 day
0.0 (0 reviews)
0.0
0.0
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A proposal has not yet been provided
$20 USD in 2 days
0.0 (0 reviews)
0.0
0.0
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I have a good knowledge to design a product. Give me a chance for your work. I was already developed same power circuit. Looking forward to hearing from you. Thanks
$25 USD in 1 day
0.0 (0 reviews)
0.0
0.0
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I have experience in battery charge Relevant Skills and Experience Lead acid batteries Proposed Milestones $25 USD - full payment
$25 USD in 1 day
0.0 (0 reviews)
0.0
0.0

About the client

Flag of UNITED STATES
Chicago, United States
5.0
2
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Member since Oct 1, 2006

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