Find Jobs
Hire Freelancers

A micro-controller based variable DC power supply with multiple output terminals

$250-750 USD

クローズ
投稿日: 9年以上前

$250-750 USD

完了時にお支払い
Hello, We need a design engineer to design for us a micro-controller based lab bench power supply with the specifications below. 1) The board will have 4 DC output terminals. 2) The first terminal will have a positive fixed 3.3VDC output and will be able to source a maximum current of 500mA. 3) The second terminal will have a positive fixed 5VDC output and will be able to source maximum current of 1A. 4) The third terminal will have a positive variable voltage from 0 - 30VDC and will be able to source a maximum current of 1A. 5) the fourth terminal will have a negative variable voltage from 0 - 30VDC and will be able to source a maximum current of 500mA. 6) The board will also have the ability to measure voltage and current accurately on all the terminals at a level of milli-volt (mV) and milli-amperes (mA) and display them on an LCD. 7) The board will be powered with mains of 220 - 250 VAC at a frequency of 50 - 60 Hz 8) All output terminals will have a common ground
プロジェクト ID: 6367043

プロジェクトについて

35個の提案
リモートプロジェクト
アクティブ 10年前

お金を稼ぎたいですか?

Freelancerで入札する利点

予算と期間を設定してください
仕事で報酬を得る
提案をご説明ください
登録して仕事に入札するのは無料です
この仕事に35人のフリーランサーが、平均$517 USDで入札しています
ユーザーアバター
Hi, I am a post graduate power electronics engineer and having very good experience in product design and development like DC-DC,AC-DC converters.I am good at micro controller codding using dspic,PIc. I will provide you best solution for you.
$700 USD 15日以内
4.9 (59 レビュー)
6.7
6.7
ユーザーアバター
Hi i can help you , see portfolio for samples of works , design with Altium A14 send sch pcb gerber stencil bom and 3D model in pdf Step or Solidworks, your project is easy and i finish in 3 or 4 days remomend used Atxmega128 . Best Regards Miky.
$388 USD 7日以内
4.9 (48 レビュー)
6.3
6.3
ユーザーアバター
Dear Hiring Manager, I am a professional electrical engineer and have completed more than 150 projects for local and international clients. I have also completed 47 reviews here in freelancer.com with excellent ratings. You can have a look at my profile and read the wonderful reviews about me. I provide free support for 10-15 days even after the completion of work. I will provide you the following things: 1- Coding 2- Circuit Design 3- Software simulation (on proteus, orcad, matlab etc.) 4- Bill of materials 5- Short descriptive report (free for up to 5 pages. Will charge $10/100 words after 5 pages) 6- Built prototype (if needed): Will charge extra for this, for shipping and for materials' cost. Regards. Faraz Ahmad
$555 USD 20日以内
4.9 (47 レビュー)
5.6
5.6
ユーザーアバター
Hi, I have experience in DC power prototyping. Last my project is 20 DC charging channels device for Li-Ion batteries. I can do your project. Price of my proposal is for work. You have pay electronic parts separately. Best regards, Slavi.
$700 USD 15日以内
5.0 (11 レビュー)
5.2
5.2
ユーザーアバター
Hi, I am professional firmware developer and hardware manufacturer expert. I have 5 years experience in the field of electronic product development on demand. Some of my recent projects are:- 1) Pure sinewave UPS development 2) 20A battery charger manufacturing 3) 20A MPPT charger controller manufacturing. 4) 400W Power supply for computers and other accessories. I fully aware of your project requirements and I assure you professional quality work. My offer:- 1) Hardware (complete including PCB board, wiring, necessary connectors and aluminium enclosure) 2) Circuit design / schematic (using PSPICE or Altium) 3) PCB design (footprint and gerber file) 4) Hex file (To burn multiple micro-controllers using code file, if required) 5) NOTE: C coding is not included in the offer, C program can be delivered on request with an additional 150$ cost 6) For hardware delivery, additional cost of courier will be charged as per actual I am ready to start the project, waiting for your response. Regards Talha
$500 USD 45日以内
4.8 (23 レビュー)
5.4
5.4
ユーザーアバター
we can built this project using single transformer and voltage regulators in addition to capacitors, just please, we will draw the circuit and test the desgin using one of simulation software,we will finish all of this project within 4 days only,
$444 USD 10日以内
5.0 (8 レビュー)
4.7
4.7
ユーザーアバター
I will do it in $150 ... please open chat window to discuss further...... =======================================================================================================================================================================================================================================================
$250 USD 2日以内
4.5 (32 レビュー)
5.2
5.2
ユーザーアバター
Hi. I am a professional Electronics Engineer having expertise in making micro-controller based variable DC Power supplies with multiple outputs. Contact me for excellent work.
$555 USD 10日以内
4.7 (21 レビュー)
4.6
4.6
ユーザーアバター
Hi, We are a team of electronics&embedded engineers with more than 10 years of experience in designing and developing various digital and embedded systems... We conduct many seminars and workshops. We also help engineering students to complete their academic projects and we have experienced with a lot of sensors, components, PCBs etc. We are very proficient with EAGLE. As a part of our training program we developed Arduino/PIC based Programming boards and driver boards for sensors, using EAGLE. So we can assure you that this project can be done 100%perfect....:-) Please check our completed projects...:-) Kindly let us know more details about this project and we can complete it together...:-) Thank You
$555 USD 10日以内
4.9 (9 レビュー)
4.3
4.3
ユーザーアバター
hi, i am an electrical engineer and i have a great experience in designing Analog Electronics, PCB layouts and microcontroller based embedded systems. i can design your power supply as a already have designed my own bench power supply which also have a microcontroller based volt and current meter. please contact me i f you are interested. thanks, Rizwan
$380 USD 10日以内
4.8 (11 レビュー)
3.9
3.9
ユーザーアバター
I designed precision programmable Power Supplies, this bead includes Complete schematic and bill of materials to implement the project. The PCB Gerber file so that you can make the PCB., also the source code of the micro controller software. This does not include a working prototype, if such is required then component cost ,PCB fabrication, assembly will be billed as per invoice. Thanks ADI
$555 USD 150日以内
5.0 (11 レビュー)
4.0
4.0
ユーザーアバター
Hi there! My name is Keith and I am a professional electrical engineer here in the US. I now work solely as a contracting designer and freelancer. I am knowledgable in all sorts of microcontroller implementations, circuit design, embedded systems, mechanical systems, PLCs and more. I always enjoy the opportunity to work on such a variety of interesting projects through consulting work and I invite you to have a look at my resume and portfolio. I am hardworking and understand that when all is said and done, my clients need a product that works well and done direct to your specification and wants. Thank you for considering! And please don’t hesitate to contact me further. - Keith B.
$722 USD 10日以内
2.8 (7 レビュー)
5.5
5.5
ユーザーアバター
Professional Electronic Engineer. High quality work is assured. Inbox and discuss please.............................................................................................................
$368 USD 10日以内
5.0 (2 レビュー)
2.3
2.3
ユーザーアバター
Hi! My total experience in electronics about 10 years and 5 of them in embedded development. AN easier and low-cost way it's build your power supply in two parts: 1) based on simple transformer with bridge for 220 AC to for example 40 DC. 2) based on Motorola MC34063 3.3V, 5V and 0-30V channels I also have GUI library for microcontrolers for any graphical display, and can implement displaying of power outputs in short time - about 1-2 days. You can contact me via Skype: slavik585s
$250 USD 10日以内
5.0 (1 レビュー)
1.6
1.6
ユーザーアバター
Hello, We are a team with 5 enthusiastic software developers, 3 of us have worked on microcontroller projects before. Hope we can cooperate. P/S: we're new to freelancer.com, please give us a chance and we won't let you down.
$350 USD 10日以内
0.0 (0 レビュー)
0.0
0.0
ユーザーアバター
1. Experience in designing power electronic systems 2. Already designed similar systems 3. Serving to automobile/power industry customers in India
$555 USD 10日以内
0.0 (0 レビュー)
0.0
0.0
ユーザーアバター
A proposal has not yet been provided
$500 USD 10日以内
0.0 (0 レビュー)
0.0
0.0
ユーザーアバター
A proposal has not yet been provided
$555 USD 10日以内
0.0 (0 レビュー)
0.0
0.0
ユーザーアバター
I did similar jobs many times. My designs are always robust, reliable and high quality. I just need to know the constraints, e.g. pcb dimensions, lcd type, component cost, distributer limitations (some project owners work only with digikey, farnell...)
$730 USD 20日以内
0.0 (0 レビュー)
0.0
0.0
ユーザーアバター
A proposal has not yet been provided
$277 USD 7日以内
0.0 (0 レビュー)
0.0
0.0

クライアントについて

UGANDAのフラグ
KAMPALA, Uganda
4.8
4
お支払い方法確認済み
メンバー登録日:2月 18, 2014

クライアント確認

ありがとうございます!無料クレジットを受け取るリンクをメールしました。
メールを送信中に問題が発生しました。もう一度お試しください。
登録ユーザー 投稿された仕事の合計
Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)
Copyright © 2024 Freelancer Technology Pty Limited (ACN 142 189 759)
プレビューを読み込み中
位置情報へのアクセスが許可されました。
あなたのログインセッションの有効期限がきれ、ログアウトされました。もう一度ログインしてください。