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Find an mistake in my Schematics/PCB file

$10-30 USD

Cerrado
Publicado hace más de 7 años

$10-30 USD

Pagado a la entrega
I have a project which has a following structure: - there is a microcontroller controlling the DAC output - the DAC output is going to the two stages of amplification(op-amps) which is feed to the base of Darlington transistor - the collector of transistor is feed to the transformer(primary side) - the other end of primary side of transformer is triggered using a MOSFET, and when triggered it is connected to the ground The schematics really should be OK, but I seem to have problems finding a mistake. I have made the PCB already and it is not working. I need your help so we can find a mistake together. I can provide all required measurements you need, but you also need to recheck the schematics and PCB design.
ID del proyecto: 11937439

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21 propuestas
Proyecto remoto
Activo hace 7 años

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21 freelancers están ofertando un promedio de $39 USD por este trabajo
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A proposal has not yet been provided
$100 USD en 2 días
4,8 (254 comentarios)
8,0
8,0
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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, multi-channel LED Drivers, Regulated power supplies design with universal input to DC output, Audio amplifier, drives design, 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.
$100 USD en 3 días
4,9 (60 comentarios)
6,8
6,8
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I have 4+ years working experience in schematic and pcb layout design. Fluent in Mentor Expedition, Cadence Allegro, Mentor PADS, Altium Designer pcb layout tools. Experience in creating footprints library, pcb layout, constraint editing, gerber generation. Basic understanding on DFM, DFT and appication on Valor DFM tool. Experience in routing high speed signals such as usb3.0, sata, pcie, lvds etc. Experience in routing double-sided, 4-layers, 6layers,8layers and more layers pcb stackup. strong high speed layout skills including differential pair, impedance control, matched delay, etc 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 involving communication protocols such as Ethernet, USB, I2C, etc Experience with Switch Mode Power Supply layout techniques Experience with high-speed digital hardware design
$35 USD en 1 día
5,0 (19 comentarios)
6,1
6,1
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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 an electronics engineer capable of diagnose an already existing PCB project. 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. Review of existing design 3. Review of schematic drawings 4. Review of layout design 5. Tests and measurements 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 P.S. I am afraid I can't offer nothing much until I get to work. It might be something small, stupid and obvious. But, it might turn out be a major flaw.
$29 USD en 10 días
5,0 (17 comentarios)
5,6
5,6
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Hello, I am electronics engineer and have nearly five years of experience. Kindly share your schematic. We can negotiate on price after I see the schematic. Thanks
$55 USD en 1 día
5,0 (13 comentarios)
5,3
5,3
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Hi, I am an electronic engineer with 4 years of experience. I have done many of this type of projects in the past. I fully understands your project needs and ready to work on your project. Please share further details with me. Regards Talha
$25 USD en 5 días
4,8 (23 comentarios)
5,5
5,5
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What does your simulation output look like?
$30 USD en 1 día
5,0 (6 comentarios)
4,3
4,3
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You have to let me know the voltage/pulses you have measured checked or do the checking as I ask,this way it will work better
$35 USD en 3 días
5,0 (11 comentarios)
4,3
4,3
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dear Sir i can do this project. I can assure you that if you work with me once, you will always work with me for these kind of projects.
$22 USD en 1 día
4,9 (17 comentarios)
4,4
4,4
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Hey, I am an electronics engineer who does repairs professionally as a day job :) I guess I would be pretty suitable for this troubleshooting job. Can I see the schematic first? =)
$30 USD en 6 días
4,9 (9 comentarios)
4,3
4,3
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Thank you for reading this proposal . I'am an Electronics Engineer with professional experience of designing embedded systems with the process starting from circuit schematic design , Microcontroller / Microprocessor Algorithm development , finally leading to simulation and multilayered PCB designing . About the work , Yes , I evaluate your design files and find out the issue and resolve it . Also my portfolio will reflect a perfect feedback score which shows a higher client satisfaction . Looking forward to your response . Have a great day Best Regards TaimoorAli
$50 USD en 1 día
4,7 (8 comentarios)
3,8
3,8
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I work in electronic circuits so I hope to can help you
$11 USD en 3 días
0,0 (0 comentarios)
2,1
2,1
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hi, i am mainly doing embedded designs , i can help to solve the error for schematic,PCB,code please send Schematic and PCB details
$88 USD en 6 días
0,0 (0 comentarios)
0,0
0,0
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Expert at new circuit board bring up. Please send schematic and layout. on Skype, I am vbdotnetpro AT hotmail DOT calm
$25 USD en 1 día
0,0 (0 comentarios)
0,0
0,0
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# Having 17+ years of experience in Design, Development and Project Management of Embedded System software & Industrial Automation software. # Experience in developing embedded software for MPC 5200(Power PC) & ARM (Cortex M3) architectures and TMS 320C6205 Digital Signal Processor, 8051, Atmel 8535 Micro controllers & PIC controllers. # Experience in developing Embedded Software using RTOS. # Device Driver for I2C, SPI, RS232, RS485, EEPROM, LCD, RTC, FLASH, FPGA, UART, SDRAM, ADC, DAC, ENCODER # Experience in various development tools like TI Code Composer Studio, AVR Studio IDE, Multi IDE, MPLAB IDE, IAR Workbench.
$50 USD en 5 días
0,0 (0 comentarios)
0,0
0,0
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Dear I am a professional Hardware engineer with 9 Year experience in Embedded System, product prototyping, PCB design ,Production,EMI/EMC certification . Currently working in a MNC as architect and freelancer is my evening job. Please start the chat section and provide more details . I will evaluate and give feed back after that you can award the project to me. Regards, Rose
$15 USD en 5 días
0,0 (0 comentarios)
0,0
0,0
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First of all the time in the bid depend upon the nature of work can not promise 2 days exactly. Could take less or more depending on your response. As for the troubleshooting work is concerned we can simulate your system and figure out the problem, it shouldn't be too difficult. I have plenty of design experience especially in power side of electronics. The reason bid amount is so low, is due to the fact I'm new here and want to kick start by accepting low offers.
$15 USD en 2 días
0,0 (0 comentarios)
0,0
0,0
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I'm confident that I can help you with your problem. I have years of experience in this field. Please let me help you and let this be my first job here. I'm also looking forward for more future jobs with you!
$25 USD en 2 días
0,0 (0 comentarios)
0,0
0,0

Sobre este cliente

Bandera de CROATIA
Osijek, Croatia
5,0
2
Forma de pago verificada
Miembro desde sept 26, 2016

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