DC Battery Backup Circuit Design

A proposal has not yet been provided

Dear Sir, Thanks for invitation! If you are looking for an highly skifull hardware engineer, I believe that I am the one who you're looking for. I am an experienced PCB designer who has over 14 years design experience on complex PCB design. I can provide you with design service from schematic entry to PCB layout. Most of my designs are ARM-Based Platform and FPGA boards, ucontroller/RF Boards. Good working records can be found in my feedbacks. For your project, I can provide you with a charging solution with minimun pheripheral components. *If DC5V plug in and battery in position, then DC5V provides system power and battery charging current. *If DC5V plug off, then battery provides system power. I am using Altium Desinger 15. Deliverables would be schematic in altium and BOM. Please message me if you are interested or want to learn more. Thanks!

hi sir i am an expert electrical engineer I can do it for you I have ALREADY DESIGNED A BATTERY BACK UP for mac book pro. you can see it my previous projects, I am waiting for your reply to start, PLEASE GIVE ME A CHANCE TO PROVE MYSELF. Regards

I am working as Lab Engineer at FAST National University Pakistan, in Electrical Department, I have conducted the followings Labs, and also supervised Projects related to these labs. 1. Circuit Analysis and Design (Matlab & Simulink) 2. Digital Logic Design (Verilog, VHDL) 3. Computer organization & Assembly Language (8086 processor, 8051 controller) 4. Electric Machines 5. Control System Design etc. I assure you, if you assign your project to me, you surely gonna work with me in future.

Hello, Have a nice day. We are Electronics engineering services Company. We will provide you complete details including Schematics, PCB layout, Gerber files and Production documents for the desired circuit. Please feel free to contact. Best Regards, Shahbaz. sorry i forgot to mention the circuit will have built in protection for over load / under voltage , thermal shutdown etc. We will provide an online demo on skype.

I have used in the design (Bluetooth Beacon BLE - module) scheme such as you need. What operating current do you need?

I'm an Electronic Engineer, working with electronics circuits (digital, analog, mixed and of power) and embedded products with microcontrollers since 1996. My work as freelancer is my only work, so I work on the projects assigned to me full time. For the PCB project I use Altium Designer 10 You will receive: - PCB project (the entire Altium project); - PCB file; - Schematic file; - Gerber files (for manufacturing); - PCB 3D modeling view. I undestood all you need and I'm ready to start. I am ready to answer any question you may have. I hope you choose me. After hired we can stablish a full communication using email or Skype. Regards, Leonardo Takahata

Hi there! I am Pranav, from India! I just read through the project description and wanted to extend my services. I understand that this is going to be a battery backup device with 5V input and output (possibly USB?). Although this is a very to-the-point description, there are two major points that are missing. 1. Rated power output (Max. current) 2. Battery capacity. With these handy I could give you a rough idea of components that could be used. I'll assume 2A output @5V and 3000mAh Li-ion battery. A good selection would be: * Battery charger: TP4056 ~$0.09 @100 pcs. * Boost ckt: LM2577 ~$0.6 @50pcs * Inductor: 10uH 4A ~$0.2 @50pcs * Switching ckt: Schottky diodes <$0.05 @500pcs. This should give you a self switching circuit for ~$1.5 per unit, @1000pcs or so. For my bid, I will be providing the following services: * Component selection * Schematic building * PCB layout (based on your specs.) and routing * Manufacturing files (Bill of materials, Gerbers, Component daigram, Pick n place file, Schematic and PCB designs) * Unlimited changes to design within 3 days. * Guarantee and support for 120 days. (Guarantee = reworks in case something doesn't work out. eg. component is not available, alternate needed) I am an expert in designing circuits, and selecting components to reduce costs. You can have a glance at my reviews to check my skills and be confident. :) I am open to discussing this further. Do get in touch. With warm regards, Pranav Skype: pranavsharma2504

I have seen and understand your requirements please open chat window to discuss further ----------------------------------------------------------------------------------------------------------------------------

Hello! I have a wide experience in pcb and circuit design. For more informaton, please look at my portfolio. Feel free for any questions. Thanks!

Wow! I may be a perfect candidate for this job. I have designed several Li-Ion battery charger before both for commercial and non commercial use. I have also designed professional battery charger and monitoring circuit for industrial use. Being an Electronics Engineer I have more than 5 years experience in the electronics field. Please see some of my designs in the portfolio to have some idea about my expertise. I could do project quickly, yet still provide professional and reliable result with FREE TECHNICAL SUPPORT after delivery. So give me a holler and see what I can do. Thank you for your time. Sincerely, Rahman

A proposal has not yet been provided

Hi, I am fully understand your requirements and ready start for the discussion with your. Please let me know if you are interested to working with me. Feel tree to check my my profile pages for your reference. I am able to do this project. Cheers Jaetoga

hi... i can design your project in Altium Designer.. i ll provide to you schematics, PCB, BOM and gerber files and what you need im interesting your project, pls give me more details.. thanks..

A proposal has not yet been provided

i have done many projects like that. I have designed converters and UPS also. I am also good in designing analog and digital circuits.