Find Jobs
Hire Freelancers

Schematic for battery backup circuit

$250-750 USD

Zamknięte
Opublikowano ponad 7 lat temu

$250-750 USD

Płatne przy odbiorze
I need a low cost and low BOM count circuit design to accept 9-16V input and utilize a battery like this one: [login to view URL] to provide uninterruptible power. If power is flowing it should use the input voltage to supply the output and charge the battery. If input power is interrupted it should draw from the battery. Output current needs to be around 5 amps.
Identyfikator projektu: 10983943

Informację o projekcie

30 ofert
Zdalny projekt
Aktywny 8 lat temu

Szukasz sposobu na zarobienie pieniędzy?

Korzyści ze składania ofert na Freelancer.com

Ustal budżet i ramy czasowe
Otrzymuj wynagrodzenie za swoją pracę
Przedstaw swoją propozycję
Rejestracja i składanie ofert jest bezpłatne
30 freelancerzy składają oferty o średniej wysokości $416 USD dla tej pracy
Awatar Użytkownika
Hello. I'm a PCB designer/ electrical engineer. You may check my qualification in the profile portfolio. Your project interested for me . We can discuss any details about schema in the chat. Will do my best, Viktor
$250 USD w 14 dni
4,9 (212 opinii)
7,7
7,7
Awatar Użytkownika
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 high frequency transformers design, circuits design, Regulated power supplies design with universal input to DC output, Filters design for harmonic analysis and Power factor correction, SMPS, LED drivers, DC-DC, AC-DC converters design, PFC interleaved boost converter, Battery management system, Battery chargers, UPS design, sine wave Inverters, solar grid tie inverters, Solar battery chargers and street light systems design from few watts to KW range using Buck, Boost, and Buck –boost, Interleaved boost/buck, Fly back Push Pull and H-bridge inverters. I have work experience to design from few watts to KW range meeting all compliances like EMI/EMC and safety standards UL etc.
$555 USD w 10 dni
4,8 (52 opinii)
6,7
6,7
Awatar Użytkownika
Hello, I have been associated with Hardware design (Circuit / Electronics design), PCB design, Library creation and Library database maintenance, PCB Manufacturing, Component procurement, PCB Assembling and Functional testing for over 9 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
$750 USD w 7 dni
4,8 (124 opinii)
6,7
6,7
Awatar Użytkownika
Hi I am interested to this project. I am Familiar with electronics, PIC microcontroller as well PCB design by Eagle. Thanks.
$277 USD w 10 dni
4,9 (95 opinii)
6,4
6,4
Awatar Użytkownika
Hello I have got your job posting “Schematic for battery backup circuit" and I am very much interested to work in your project. I am a circuit designer and have more than 5 years experience of working with the embedded systems(Arduino ,ARM processors ,PIC microcontrollers,All types of sensors and actuators). i have done tons of similar projects So, I think you’ll find, I have the skills you’re looking for. For more on my skills and successfully finished projects, please have a look on my Profile and Portfolio. I have all the components available here with me so i will develop a working prototype according to your specifications and then send you the schematics,layout and everything so things will work for sure. I am always available on Email and Skype. Please have a voice or video chat if necessary. I will be available more than 60 hours per week and able to start your project as soon as possible according to you. Thank you for your consideration, Best Regards, Haseeb Shafqat
$250 USD w 7 dni
4,9 (45 opinii)
5,9
5,9
Awatar Użytkownika
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. As I understand from the project description you are looking for a hardware engineer capable of designing a PCB according to the stated requirements. So, without further ado here's how the workflow would look like, if you happen to choose me as a partner for your project: 1. Initial discussion 2. Research 3. Block diagram of proposed solution 4. Schematic drafts (based on proposed solution) 5. Review of schematic drafts 6. Component library creation 6.1 Schematic symbol library creation 6.2 Footprint library creation 7. Schematic drawing 8. Review of final schematic drawing 9. Layout design 9.1 Components placement and arrangement 9.2 Review of proposed layout design arrangement 9.3 Components routing 9.4 Review of final layout design 10. Design rule check 11. Verification and validation 12. Production files (GERBER, NC DRILL, STEP, BOM, ASM, PICK & PLACE, SCH, 2D mechanical drawing) 13. Panelization (for mass production) Your project will be carried out on Altium Designer and Autodesk Inventor. Don't hesitate to contact me with questions regarding any details around your project. You could also check out my profile on Freelancer and LinkedIn for more details around my professional experience. I am looking forward to hearing from you soon. Thank you for your time. Kind Regards Martin Botsov
$748 USD w 42 dni
5,0 (16 opinii)
5,6
5,6
Awatar Użytkownika
I recently completed my undergraduate electrical engineering at Carleton U. I have 3+ years of experience in circuit design. With more details on the requirements for this circuit and given enough time, I am confident that I can complete the design.
$722 USD w 10 dni
4,8 (9 opinii)
4,0
4,0
Awatar Użytkownika
A proposal has not yet been provided
$277 USD w 7 dni
5,0 (3 opinii)
3,6
3,6
Awatar Użytkownika
Dear Sir, i am professional at electronics field, and electronic circuits design, and can design this circuit for you, but i need to ask about that 6-19 v will input the circuit, how much amperes of this voltage?, and the output you need it to be divided to two terminals?, one for supplying 5 amp, and the other the same amp from the battery?, please confirm waiting your response, regards
$555 USD w 15 dni
4,9 (6 opinii)
3,5
3,5
Awatar Użytkownika
I would love to design this for you. Do you want just a circuit diagram, or I can make a circuit board. Thanks, Josh Valdes
$777 USD w 10 dni
4,0 (1 opinia)
2,2
2,2
Awatar Użytkownika
I'll give the AutoCAD circuit and the BOM in 10 days. For completion, output voltage is required, as well as more knowledge on the batteries.
$277 USD w 10 dni
5,0 (3 opinii)
1,1
1,1
Awatar Użytkownika
I am a professional HW Engineer having 9 Year experience in Product Development (Schematic and Layout). Currently working in a German Based company . Current Bid includes below 1. Schematic in Orcad DSN File and PDF 2. BOM in excel and PDF. Layout not considered in this offer. But ready to do it for you free , Since i am new freelancer in this group. Extra 12 Days Required for the same. Schematic + BOM --> 5 Days (Current bid) Layout --->12 Days Max (It may reduce , if the component selected are already in my )library Thank you very much in advance
$250 USD w 5 dni
5,0 (1 opinia)
1,3
1,3
Awatar Użytkownika
Hi sir am from India. I have 4+ years working experience in pcb layout design,Mechanical 3d modeling. Fluent in Mentor Expedition, Cadence Allegro, Mentor PADS, Altium Designer pcb layout tools. Experience with isolation requirements, Experience designing high density boards that incorporate microprocessors, DDR2 and DDR3 memory and peripherals, including layout experience with BGA parts Experience in board layout Experience with Switch Mode Power Supply If you Assign the project for me you will get best result of the project Thank you
$277 USD w 5 dni
4,2 (1 opinia)
0,5
0,5
Awatar Użytkownika
Hi I can Easily design your circuit as I have previously designed system like this requirement for a Car Surveillance Camera. Apart from that I have worked on many Buck, boost as well as buck boost systems. I will design your schematic in Orcad with BOM details. I will make a reliable schematic. let me know what is your out put voltage.
$444 USD w 10 dni
0,0 (0 opinii)
0,0
0,0
Awatar Użytkownika
I have experience designing circuits for industrial machinery, and designing buck converters. I know the weaknesses points of this type of circuit. I don't trust in simulations, because they overlook many physical details. I built my designs and make testing to the breaking point , to ensure that they meet my client needs
$555 USD w 7 dni
0,0 (0 opinii)
0,0
0,0
Awatar Użytkownika
Experience the Experienced
$277 USD w 5 dni
0,0 (0 opinii)
0,0
0,0
Awatar Użytkownika
Dear Sir/Madam, My partner and me are a IoT based home automation product development freelancers. we have developed (Wifi,RF,Bluetooth,GSM)IoT based home automation and irrigation system. we are working on different projects like automation,Industrial equipments,power supply,consumer electronics products and R&D of new product design . Ready to sign NDA - Your design will be confidential with us . We are able to meet your requirement, given our expertise in the field. We have our own team in PCB Designing,CAD/CAM design,ANSYS Reports,3D prototype Printing,Firmware development, Testing and manufacturing (including sourcing components). Digital Marketing: SMM,SEO Regards, Dinesh.
$250 USD w 2 dni
0,0 (0 opinii)
0,0
0,0
Awatar Użytkownika
I am Rutherford Brown .I am a Telecommunication and information engineer. I bid these job and assure you a perfect work. I am very ready to work for you. Thank you in advance and I will appreciate your consideration
$555 USD w 10 dni
0,0 (0 opinii)
0,0
0,0
Awatar Użytkownika
A proposal has not yet been provided
$388 USD w 7 dni
0,0 (0 opinii)
0,0
0,0
Awatar Użytkownika
You didn't mentioned the input and output specification AC OR Dc? voltage? if AC then frequency ? waveform? etc etc please come in the private message to discuss the project
$250 USD w 10 dni
0,0 (0 opinii)
1,4
1,4

O kliencie

Flaga UNITED STATES
Boca Raton, United States
5,0
93
Zweryfikowana metoda płatności
Członek od lis 30, 2005

Weryfikacja Klienta

Dziękujemy! Przesłaliśmy Ci e-mailem link do odebrania darmowego bonusu.
Coś poszło nie tak podczas wysyłania wiadomości e-mail. Proszę spróbować ponownie.
Zarejestrowani Użytkownicy Całkowita Liczba Opublikowanych Projektów
Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)
Copyright © 2024 Freelancer Technology Pty Limited (ACN 142 189 759)
Wczytywanie podglądu
Udzielono pozwolenia na Geolokalizację.
Twoja sesja logowania wygasła i zostałeś wylogowany. Proszę, zalogować się ponownie.