adapt PCB circuit for Solar panel (21V) to charge Litio battery (4.2V)

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I need PCB design for Solar panel circuit (21V) to charge Litio battery (3.7V -4.2V).

-PCB 2 layers in KiCAD

-I'll provide PCB shape in KiCAD file

-I'll provide actual PCB circuit in KiCAD file

-PCB dimensions less than 90x90mm (has enough space)

For now I have one circuit done in KiCAD but there is something that not working properly. Now 4.2V is provided as output of solar panel circuit but when we connect the battery, doesn't reach more than the initial battery voltage.

Project circuit will be validated making the PCB through JLCPCB.

If the solutión is easy requiring only some changes using the actually board I have, validation will be done very fast and extra € bonus will be provided.

No extra capacitors as solution...I have already tested :)

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No payment before validation!!! If you are really good, I can hire you for other projects.

If the PCB design doesn't work because your lack of experience, the project will be cancelled and no more projects with you.

Kemahiran: Reka Bentuk Litar, Kejuruteraan Elektrik, Elektronik, Susun Atur PCB, Battery Charging and Batteries

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Tentang Majikan:
( 8 ulasan ) Valladolid, Spain

ID Projek: #26834127

17 freelancers are bidding on average €41 for this job


I have Bachelors in Electrical Engineering and holds Masters degree in Energy Systems Engineering with strong research background focused on renewable energy particularly solar energy systems. I have worked on several Lagi

€35 EUR dalam 7 hari
(63 Ulasan)

Hi I am interested to your project. I am familiar with electronics, microcontroller as well as PCB design by Eagle. Thanks.

€55 EUR dalam 5 hari
(93 Ulasan)

Best PCB Design Expert at your doorstep! Dear Client, I couldn’t stop myself from bidding after going through the description as they are an exact match with my skillset and experience. I have experience in Solar pan Lagi

€35 EUR dalam 2 hari
(8 Ulasan)

Dear Client, I have read and understood your requirements and could do it for you in the least time and utmost superior quality. I have experience in Solar panel to charge Litio battery and could design it for you as p Lagi

€40 EUR dalam 2 hari
(2 Ulasan)

Greetings!! I read the overview of your project and am interested in working with you. I am an ELECTRICAL/ELECTRONICS ENGINEER from India with 4+ years of experience in designing circuits and PCBs. With my precision an Lagi

€40 EUR dalam sehari
(14 Ulasan)

Am a Mechatronic engineer with 5 year experience in circuit and pcb design and I believe i can handle your task to perfection

€56 EUR dalam 5 hari
(20 Ulasan)

Dear Client. I have just read your job description and your project is really interesting to me. I have many experiences working for 12+ years with Circuit design, PCB design, manufacturing functional prototyping with Lagi

€35 EUR dalam 3 hari
(7 Ulasan)

Hi, Good day! This is Lawrence and I'm very interested in your project and I would like to work with you. I'm a KiCAD user as well and I've been using it for more than many years now. Please help share your existing Lagi

€19 EUR dalam 3 hari
(5 Ulasan)

text me i will do it perfectly as i am a pcb designer and expert ..........,...................................................................

€15 EUR dalam sehari
(27 Ulasan)

I am electrical engineer .I have lot of experience working with various employers globally. Can I do Circuit Analysis and design, Power System Analysis,DC/AC machines Electrical Distribution , translation and technical Lagi

€35 EUR dalam 7 hari
(20 Ulasan)

Hello, If I succeeded in Eagle to Altium conversion, is it acceptable alternative? JLCPCB: Project delivery time impact with delivery to Spain (?). Please show me the schematic before starting. Regards, Ashot

€60 EUR dalam 3 hari
(2 Ulasan)

hello sir.✋ I have just read your job description and your project is really interesting to me. The Items you raised are similar to what I have already done in practice and I think you can do it in a short time if you Lagi

€35 EUR dalam 7 hari
(6 Ulasan)

Hello, I am an Electrical and Electronics Engineer and I completed my master's degree. I have an academic work on solar systems. I also have an MPPT system that I designed. You can see it from my portfolio. I designed Lagi

€50 EUR dalam 2 hari
(7 Ulasan)

General message: Dear Sir, Greetings from Turkey. I hope you are good. Let me introduce me. I'm Electronics Enginner who have 19 year experience. My experience is related to power electronics, hardware design, Lagi

€40 EUR dalam 4 hari
(4 Ulasan)

If the battery is drawing current then your circuit is probably OK. Connecting a current limited voltage source across a battery will drop the source voltage to almost the battery voltage, which is correct, but the bat Lagi

€55 EUR dalam 3 hari
(3 Ulasan)

I am designing DIY projects and real time automation projects for past 6 years. Some of them are published in Electronics For You magazine which is listed on my LinkedIn profile [login to view URL] Please h Lagi

€35 EUR dalam 5 hari
(1 Ulasan)

Hi there Charging a Litio battery with Solar panel is a challenging task. But, I have made a solar charging circuit and PCB to charge a 2S (7.4V) Li-ion battery. I have 3+ years of experience in circuit and PCB desig Lagi

€50 EUR dalam 3 hari
(0 Ulasan)