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Spreadsheets Upwork freelancers typically receive a client rating of 4.76.

4.76
Last updated: August 1, 2015
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  1. John lester S.

    John lester S.

    Senior Electronic Hardware Design Engineer

    Philippines - Tests: 3 - Portfolio: 12

    More than 10 years of experience in circuit design and product development. Have long time experience in doing electrical and electronic schematics. Experienced in switching converter design such as flayback, boost, buck, forward, ITTF, LLC and others. Have experience in designing low to high power switch mode power supply from proto to mass production. Experienced in LED driver design and LED applications. Capable of doing detailed analysis such as worst case, design failure mode and effects analysis, monte carlo and reliability prediction to come up with a robust and high quality design. Have long experience in implementing customer requirements and designing circuit from scratch that best fit the specifications. Capable of leading people. Summary of Capabilities: 1. AC-DC power supply design, switching and linear, multiple outputs or single, trimmable or fixed 2. DC-DC power supply design 3. Offline AC-DC adapter design 4. Charger design with constant current and constant voltage, AC-DC 5. Charger design with constant current and constant voltage , DC-DC for Li-Ion, Li-Poly, LiFeP04, Lead acid and so on 6. LED lighting related applications, LED drivers (CV/CV) 7. Solar panel energy harvesting and charging systems 8. Switching converters such as buck, boost, buck-boost, flyback, forward, LLC, half bridge etc 9. Amplifiers, filters, switch 10. MCU, DSP and digital circuits 11. Schematic and PCB using eagle 12. Simulations using LTSpice, Matlab, Simulink, Simetrix and Simplis 13. Design analysis and computations using Mathcad 14. Control system design, type 1,2,3 and PID using spice, SISO tool in Matlab or Simulink control design Projects: 1. 750 W AC-DC, efficiency 94% This is a three stage design consisting of power factor correction circuit (boost topology), buck pre-regualtor and main DC-DC (half bridge resonance). The supply has EMI filter on board and passed CE and FCC or ICES emission limits. This supply is compliant to line surge; can withstand 2.6kV and 1.3kV common mode and differential mode voltage spikes. It complies to ESD, EFT, ringwave, dips and interruptions and harmonics and of course conducted and radiated EMI. The design has an auxilliary circuit which is a flyback topology that provides power to the control and houskeeping circuits. The main controllers are digital signal controllers (DSC). Some features includes but not limited to: a) Current sharing, b) Startup short protection, c) Running Short Protection, d) Over voltage protection, e) Under voltage protection, f) Power limit, g) Higher power factor (close to unity), h) holdup of 20msec, i) over current protection, j) over temperature protection, k) output reporting, l) input reporting, m) higher accuracy 2. 500 W AC-DC, efficiency 92% Have the same features as above. This PSU is composed of two stage only; PFC and LLC resonant converter. 3. 360 W AC-DC, 90% efficiency, variable output This power supply has variable output voltage from 14.25V to 16.5V. Two stage design using PFC and LLC resonant converter. All the basic circuits in item number one are in place. All the international standards are also met. This power supply has a convection rating of 220W; meaning it can handle this power without a fan cooling. This is ideal for medical and other fanless applications. 4. 450 W AC-DC, 92% efficiency, multiple outputs This power supply has multiple outputs. It has 12V/21A, 5V/30A, 3.3V/10A and standby of 5V/4A. All the international standards are in place and has all the protections needed as item number 1 above. 5. 50W buck-boost design This is used for e-cigarrete. It can handle continuous 50W with variable output voltage of 1V to 10V. It is powered by a 3.7V rechargeable batttery. 6. AC-DC, 5W charger design with constant current and contant voltage 7. Charging circuit for solar panel applications 8. Lithium Ion Charger 32V input to 24V output with variable charge current 9. Energy saving standby circuit 10. Smart Junction boxes for automotive. This is the one controlling all the body electronics of an automobile. Such as headlights, foglights, wipers, mirrors, heated mirror, fans, etc.

    $30.00 /hr
    11 hours
    4.40
  2. Evan Rhy Galvez

    Evan Rhy Galvez

    Data Entry Professional

    Philippines - Tests: 9 - Portfolio: 1

    I am an Electronics and Communications Engineer by education and training and have also completed my Master's degree in Education major in Educational Management. I have also undergone training and seminar-workshop on the Outcomes-Based Education. I have been in the teaching profession since 1997 teaching mathematics, physics, electronics, telecommunications, PC hardware maintenance and repair and some computer applications such as MS Word processing, MS Excel spreadsheet and MS PowerPoint presentation. I have also worked part time and sometimes full time when needed doing administrative support tasks such as data mining/research, data entry and email handling since 2010. My core competency lies in word processing, writing and research since these are the skills I had been using to prepare lecture notes with the use of MS Word and the internet to ensure updated lectures. I also use MS Excel beyond just simple data entry. I am familiar with some of its basic functions and have been using it for auto-calculations in grading and it's pivot table feature for generating reports. In addition, I do some non-academic writing and present them using MS PowerPoint as part of my non-curricular and non-professional activities in some religious gatherings. I am seeking opportunities to perform internet research, data entry work, create spreadsheet records and write about any topic or theme that you or your business would require.

    $5.56 /hr
    5,101 hours
    4.98
  3. ali kali

    ali kali

    SEO Consultant&Specialist|Guaranteed Top Ranks at Google|White hat SEO

    Bangladesh - Tests: 5 - Portfolio: 5

    Seek excellence in the service industry with self discipline, willing to learn and adapt new tasks and be trained in handling responsibilities with minimum supervision for professional enrichment. My main goal is to offer the clients 100% satisfaction with the quality services and support. If anyone gives me a chance to work in their project, I will promise you that your web site should secure in the Top page in Google, Yahoo and Bing. My mission is to offer result- leaning Search Engine Optimization (SEO) Service which is inexpensive to all the online businesses precise from basic HTML/XML static web pages to multifarious E-commerce or contented portals. I am applying up to date methods according to the top Search Engine Guidelines in On-page and Off-page Optimziation of website including the Keyword Research, Competitors Analysis, Link Building, Social Bookmarking, Directories Submission, Social Media such as (Facebook, My Space,Twitter, etc...), Forum Posting ,Blog Commenting, Squidoo lenses, Link Wheel building, Article Submission etc. All my present and previous work is based in SEO, SMM and SEM. So dealing with all kind of SEO, SMM and SEM is promptly and efficient for me. I am very much familiar with CRM Lead entry & editing lead, PDF conversion, SEO related job, Like as: Article submission, Press release submission, Forum posting,Link building, Search engine submission and any kinds of Data Entry job.

    $4.44 /hr
    3,015 hours
    4.42
  4. Michelle Joy Callo

    Michelle Joy Callo

    Data-entry/Web Research/Virtual Assistant/Social Media Marketer

    Philippines - Tests: 4 - Portfolio: 1

    - My expertise is in MS Office Word and Excel. - I am self-motivated and self-experienced encoder/copywriter/assistant. - I am effective and efficient worker and having priorities of satisfying my client. - I was become an part time encoder. My skills and abilities was developed because of my work. - I was employed as a part timer in one of the company in our city for almost 5 months. - I am a trustworthy and reliable worker and as well as in my job. I will be able to work effectively and efficiently if you'll hire me. Please see my video for the sample of work.

    $3.20 /hr
    212 hours
    4.70
  5. Alice Co

    Alice Co

    Wordpress data entry, Web Research Specialist,

    Philippines - Tests: 4 - Portfolio: 2

    I am a Customer Service Associate with 4 years working experience in Business environment. I have worked with PSBANK for 4 years in customer relation. I possess strong communication skills and interpersonal skills. Having worked closely with clients and partners, I have developed strong ability to build customer relationships. I am used to working under stringent timelines and have the ability to multi-task and make quick decisions. I am able to adapt well and can handle complex situations with ease. I strive for professional growth and career promotion. Proficient -MS Word -MS Excel -MS PowerPoint -Google spreadsheet -Google docs -WordPress -Quick book

    $4.44 /hr
    1,084 hours
    4.38
  6. Mohammad efadur R.

    Mohammad efadur R.

    Web Reserch | CRM | Lead Generation | Microsoft Office | Data Entry |

    Bangladesh - Tests: 13 - Portfolio: 9

    .........................ஜ۩۞۩ஜ▬▬▬ஜ Beautiful Quote ஜ▬▬▬ஜ۩۞۩ஜ............................ .......................ஜ “Start where you are. Use what you have. Do what you can.”ஜ........................ Let me introduce me as a hard working Data Analysis and Web Research professional willing to go that extra mile to achieve the targets set forth. I have excellent English skills and proficiency in E-commerce site navigation. I am specializing my skills and continuing looking forward to increase and learn more knowledge in different kind of task.I believe my capabilities would be perfect for your project. I also do complete my work with honestly.I am able to 30+ hours work per week.My typing speed 36 wpm.If, you like my profile please, hire me. If you have any question feel free to ask me. ۞► I have Expertise in the flowing area ◄ ۞ ۞► Email Scraping ۞► Email & contact List Building ۞► Google Research ۞► Finding Companies email address ۞► Finding corporate email address ۞► Web Research ۞► LinkedIn Research with Advance Search ۞► Data/Jigshow Contact Research. ۞► Data collection/Web scraping/Data Cleansing ۞► Sales & Lead Collection ۞► Salesforce for CRM ۞► Advance Google Search ۞► Email List Building ۞► Lead Generation ۞► Lead Collection ۞► Sales Lead Generation ۞► Microsoft Excel, Office and PowerPoint. ۞► Google Spread Sheet and Drop-box ۞► Photo re-size ۞► Infusionsoft Data Entry ۞► Transcribing Data To Excel/Word ۞► Real Estate Research ۞► Google Doc/Spreadsheet ۞► Amazon Product Listing ۞► eBay Product Listing ۞► OpenCart Data Entry ۞► Building Excel Database From Website

    $3.33 /hr
    1,862 hours
    5.00
  7. Hilda S.

    Hilda S.

    Professional web research and data entry

    Kenya - Tests: 4 - Portfolio: 3

    A dedicated, honest, and hardworking individual searching for job opportunities wherein I can share and enhance my skills and potentials. I am a fast learner, can easily get instructions and can work with less supervision. I am willing to be trained and very much open to suggestions and opinions that will lead for the betterment not only of my work but of my whole being as well. I am well diverse person and can multitask. I am reliable and can do 24 hour work turn around. If you hire me, you can expect constant communication. I will provide daily progress and I work fast and as accurate as I could. I won't stop until you're not satisfied with the outcome. Looking forward to be part of your project soon. My experience, expertise and professional skills are in the areas of Data Processing, Email Handling and social media marketing, web Research, lead Generation, Data Mining, Data Scraping, Database Building, Mailing List Development, Database Create, Domain Research, C level Email Research, Business/company research, Social Media Research (Facebook, twitter), LinkedIn Research, PDF Data conversion. I look forward to providing my clients with services that impress, while providing quality and professionalism. I do all my work in a professional and ethical way to ensure long term working relationships with my clients. Kind Regards Hilda

    $3.00 /hr
    343 hours
    5.00
  8. Ellen M.

    Ellen M.

    Virtual Assistant

    Philippines - Tests: 21 - Portfolio: 19

    I'm Ellen your virtual assistant, I'm ready to do any kind of task that will enable me to use my strong administrative skills. I have wide experience in doing clerical work (online & offline) for more than 15 years. Which focus on doing data entry, web research, manage on billings, invoices, bookkeeping and as website admin assistant. I've graduated as Secretary of the Year in batch 1996 in my 2-year Computer Secretarial course, I've also gained a Special Award "Service Award" when I was with my Bachelors degree in AB-Economics. I have the ability to work well and can do any task assigned. I'm open and willing to work on more challenging task with a high level of accuracy. I make sure I will be an asset to my employer and rest assured that all given tasks are taken cared.

    $3.33 /hr
    5,107 hours
    4.86
  9. Md. Sazedur Rahman

    Md. Sazedur Rahman

    Web Research Specialist

    Bangladesh - Tests: 8 - Portfolio: 6

    I’m expert in Data Entry,Web Research, Lead Generation work . I can solve any kind of research work easily . To solve research work , generally i use google , zoominfo, hoovers, data.com , Linkedin etc . I use mailtester.com and rapportive .com for testing valid email addresses. I have done more than 50 jobs on oDesk and gotten good feedback . I have five years experience on data entry and web research work .I have good knowledge on speaking and writing english . My main objective is to provide excellent service, with timely, accurate, and professional results.

    $4.00 /hr
    381 hours
    4.90
  10. Pradip Kumar Banik

    Pradip Kumar Banik

    Lead Generation & Research and Graphic Designing

    Bangladesh - Tests: 15 - Portfolio: 13

    I offer 100% dedication to my works. I am always willing to do more than my capabilities for my Respectable Clients. Over the last 2 years in freelancing sector, I have provided my Services to Many Clients by different works around the World. Moreover, I am a quick learner and able to show my expertise within short period on diverse works. Till now, I can help you efficiently for the following Services and expect to learn more over the time. *VIRTUAL ASSISTANT* 1. Personal Assistant. 2. Job Searching Assistant. 3. Bidding. 4. Virtual Assistant. 5. Real Estate Assistant. 6. Lead Generation. 5. Etc.. *E-mail Marketing* *MailChimp* *Constant Contact* *Icontact* *Aweber* *GetResponse* *Social Media Marketing* *WEB RESEARCH* 1. Blog research. 2. Website research. 3. Research on Various Language Websites Worldwide. 4. Image research. 5. eBook research. 6. Finding useful information. 7. Data mining. 8. Extracting email address & other related contact information. 9. Research on Yelp, Zillow, Manta etc.. 10. Research on Linkedin, Facebook, Pinterest etc.. 11. Research on Kickstarter, Indiegogo etc.. 12. Research on Amazon, Ebay etc.. 13. Market Research. 14. Research on Craiglist, Monster.com, Careerbuilder.com, Indeed.com, Jobs.net, etc.. 15. Research on B2B and B2C platforms like Alibaba.com, Globalsources.com etc.. 16. Bitcoin and other coins research. *DATA ENTRY* 1. Data Scraping. 2. File Converting. 3. Amazon Product Uploading. 4. Amazon Listing. 5. Ebay Listing. 6. Data Mining. 8. Data Collection. 9. HTML. 10. Microsoft Word & Excel Expert etc.. *PHOTOSHOP & GRAPHIC DESIGN* 1. Photo Editing. 2. Photo Retouch. 3. Photo Manipulation. 4. Photo Enhancement. 5. Image Cropping & Re-size. 6. Watermark Removal. 7. Photo Restoration/Re-creation. 8. Merge one more photos. 9. Add person/remove person (or object) 10. Face Replacement. 13. Business Card Creation. 14. Brochure Creation 15. Logo design. 16. Power Point Presentation. *WORDPRESS* 1. WordPress data entry. 2. WordPress content adding. 3. Create new post. 4. Upload image. 5. WordPress theme & Plugins customize etc. Software Proficiency: 1. Excel spreadsheet - 5 2. Google docs - 5 3. Photoshop - 5 4. Power Point - 5 5. Word- 5 Regards, Pradip

    $7.78 /hr
    1,681 hours
    4.98