电路设计 工作与竞赛

If you want an end to end outsourcing solution for all your projects relating to circuit designing, outsource the work or job at the world's best marketing resource online Freelancer.com and get the work done by the expert circuit designer freelancers. These freelancers work online from all across the world and can be helpful to you and your project. Freelance them the work to be done either on part time or full time basis and be assured of an optimum result. The job sphere may include PCB designing, PCB board circuit debugging, layout, schematic designing, MCS including the software design and the hardware design.

The freelancer circuit designer will be able to work on the PCB print circuit, half finished product design, finished product and also assemble them. Their other work expertise are high speed telecom, RF board, DSP, microcontroller control, signal board, circuit design and assembling, electronic items designing like toy, motor, electronic gifts, main board, security defend, Vidicon, USB, DVD etc. If you are a freelancer having adequate skill and experience in circuit designing, Ethernet, USB, electronics, networking, digital and such related fields, submit your bid in the Freelancer.com and get posted immediately.

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项目/竞赛 描述 竞标数/参赛作品数 技能 已开始 结束 价格(CNY)
electrical compliance australia guide Need someone with experience with Electrical Compliance to advice us on the design and chnages required to ensure we pass Compliance through Australia Standards. The product involves 240v/ and 3 Phase switch connected to an electronic circuit 1 电子, 微控制器, 电機工程, 印制板布局, 电路设计 Feb 24, 2018 今天6天 21时 ¥1584
Electronics/ pCB designer with cirrus(CS5464) mertring experience. We have a very specific design we wish to enhance that requires the cirrus metering chip. We want someone to assist with design of the schematic, BOM and PCB design. Experience with metering chip preffered but you MUST be able to speak and meet deadlines. 2 电子, 微控制器, 电機工程, 印制板布局, 电路设计 Feb 24, 2018 今天6天 21时 ¥158
Radio freq. electronic design The valves measure 30x9x6mm overall. They have no markings other than one having a red spot and one a black spot. From examination the black-spot and red-spot valves appear to be pentodes, while the third valve could be a triode thyratron. 7 电子, 微控制器, 印制板布局, 电路设计, 编程 Feb 24, 2018 今天6天 17时 ¥5658
Logisim Calculator This calculator should be built in Logisim. The calculator is a relatively simple 8-bit calculator with a hexadecimal output. It has a single 8-bit input (you can think of these as switches a user would set) and 5 buttons (+, -, *, /, and =). The calculator takes 2 numbers sequentially. The user indicates that the first number has been entered in the 8-bit input by selecting an operator (changing ... 6 电子, 微控制器, 电機工程, 电路设计 Feb 24, 2018 今天6天 15时 ¥177
Circuit Design for high gain darlington amplifier hello! i like to have design of a darlington amplifier circuit with high gain for embedded purposes. the freelancers with relevant skills do send me their proposal. 5 工程, 电子, 电機工程, 印制板布局, 电路设计 Feb 24, 2018 今天6天 8时 ¥127
Build a PCB layout I have a problem with PCB layout. I want to hire anyone who has PCB design skill. Please contact with me. 27 电子, CAD/CAM, 电機工程, 印制板布局, 电路设计 Feb 24, 2018 今天6天 7时 ¥70
Design a Circuit Board *** Need expert in Kicad software****... i have attached all details of work in the word file take a look at this and let me know if you can do this work 3 电子, Verilog / VHDL, 电機工程, 印制板布局, 电路设计 Feb 24, 2018 今天6天 1时 ¥602
Power supply for solar street light PCB layout using Allegro/Orcad version 17.2 (Don't use 16.6) 1) Update schematic, minor changes, may include creating three footprints 2) Understand and follow the specified component placement 3) PCB layout with necessary consultation 4) Prepare design files, ready to order PCBs 18 电子, CAD/CAM, 电機工程, 印制板布局, 电路设计 Feb 23, 2018 Feb 23, 20185天 18时 ¥2756
Altium help Altium help needed for learning. 2 工程, 电子, 电機工程, 印制板布局, 电路设计 Feb 23, 2018 Feb 23, 20185天 15时 ¥242
Design a Circuit Board *** Need expert in Kicad software**** i have attached all details of work in the word file take a look at this and let me know if you can do this work 1 电子, Verilog / VHDL, 电機工程, 印制板布局, 电路设计 Feb 23, 2018 Feb 23, 20185天 14时 ¥149
4 layers PCB Design on Altium deadline for this pcb design is 3 days. The part name CP1~CP80 is cap for power supply. Please place this parts close to IC. You should place of FCON1과 FCON3 connector is Top and FCON2, FCON4 is bottom inner layer is GND와 +5VDC The area marked FAULT - A1 is the structure that stacks up the boards of Fault-A2 FAULT - A3 FAULT - A4. 16 电子, 微控制器, 电機工程, 印制板布局, 电路设计 Feb 23, 2018 Feb 23, 20185天 11时 ¥684
Proteus expert I'm looking for someone who is expert in Proteus tool. I have already designed a circuit which needs to be modified or designed it from scratch. 29 工程, 电子, 电機工程, 印制板布局, 电路设计 Feb 23, 2018 Feb 23, 20185天 1时 ¥2179
Circuit Designing Issue in Power Supply.. I am interested to reduce the ripple factor in the power supply of 8V. 16 工程, 电子, 微控制器, 电機工程, 电路设计 Feb 22, 2018 Feb 22, 20184天 17时 ¥108
Circuit Designing Issue in Power Supply I am interested to reduce the ripple factor in the power supply of 5V. 15 工程, 电子, 微控制器, 电機工程, 电路设计 Feb 22, 2018 Feb 22, 20184天 17时 ¥127
traffic system It's basically about traffic/congestion management system, this will allow drivers and riders to avoid traffic by taking alternative route when there is a congestion on a particular road. Devices with sensors will be placed at intervals to help detect the amount of cars at a given distance. Let's say 10devices in a kilometer The information will be sent to a system that helps calculate... 15 电子, Mobile App Development, 电路设计, Documentation Feb 22, 2018 Feb 22, 20184天 15时 ¥3428
PCB DESIGN Design a Printed Circuit Board 73 电子, 电機工程, 印制板布局, 产品设计, 电路设计 Feb 22, 2018 Feb 22, 20184天 6时 ¥179
Inverter Design Need an expert to help me design an inverter. Remuneration will not be a problem for a qualified person. Should be comfortable with inverter and UPS technology. Work will be based in DELHI NCR. 9 电子, 电機工程, 印制板布局, 电路设计 Feb 21, 2018 Feb 21, 20183天 23时 ¥3884
Wearable Bluetooth 5 device - open to bidding we are looking for an engineer, who estimate and develop an embedded software part of our project "Wearable Bluetooth 5 device". Briefly, this device is based on Nordic nRF52840 [链接已删除,请登录查看] and its hardware platform includes also the following peripherals: 3-axis Accelerometer + 3-axis Gyro + 3-axis Geomagnetic sensor IC; GNSS module; FLASH memory IC; Power management IC, Li bat... 9 电子, 微控制器, 电機工程, 印制板布局, 电路设计 Feb 21, 2018 Feb 21, 20183天 21时 ¥44
need a circuit designer only fresh can bid message me so we discuss further details 36 电子, 微控制器, 电機工程, 电路设计 Feb 21, 2018 Feb 21, 20183天 17时 ¥44
Power RMS Converter Design of a Circuit which will measure the RMS power across a high power resistor driven from a high voltage inverter running at 4.2MHz All circuitry to be design in Analog Domain, section needed is the analog section as shown in the block diagram. 15 工程, 电子, 电機工程, 印制板布局, 电路设计 Feb 21, 2018 Feb 21, 20183天 16时 ¥3086
Design a Circuit Board: 3 phase motor controller This project is to be completed in Kicad software; the schematic and pcb layout. It is a 300amp motor controller for 3 phase AC induction motor. The battery voltage will vary between 3volts and 25 volts. It must be able to operate all the way down to 3 volts! Some boost circuitry will need to be designed for gate drive. There will be 6 mosfets total in the power stage. We are specifying to us... 11 电子, 电機工程, 印制板布局, 产品设计, 电路设计 Feb 21, 2018 Feb 21, 20183天 16时 ¥1248
expert in pcb needed asap Pcb expert needed illl send the schematic 12 电子, CAD/CAM, 电機工程, 印制板布局, 电路设计 Feb 21, 2018 Feb 21, 20183天 13时 ¥94
Project for Raja V. i would like to learn pcb designing from you. 6 电子, CAD/CAM, 电機工程, 印制板布局, , 电路设计 Feb 21, 2018 Feb 21, 20186天 2时 ¥1521
PCB relayout 1) Transfer of components to the bottom side of the board. 2) Add socket layout on the top side of the board. 3) Refer to attached PCB gerber file and socket foot print dxf file. 32 电子, CAD/CAM, 电機工程, 印制板布局, 电路设计 Feb 21, 2018 Feb 21, 20183天 1时 ¥854
High Side Passive 1m Delay Circuit The objective is to create a 1m delay circuit in EAGLE to delayed power that feeds an array of P MOSFET transistors. The delay is to allow enough time for the microcontroller to boot up without causing any P MOSFET to activate during bootup. Updating the firmware on the microcontroller is NOT an option. The current delay can be accomplished using a 2200uF Capacitor, however, we need a be... 21 电子, 微控制器, 电機工程, Arduino, 电路设计 Feb 21, 2018 Feb 21, 20183天 1时 ¥1039
Embedded software for wearable Bluetooth 5 device - open to bidding looking for an Embedded software Engineer capable to participate in software development for wearable Bluetooth 5 device. This device based on Nordic nRF52840 [链接已删除,请登录查看], and its hardware platform includes also the following peripherals: 3-axis Accelerometer + 3-axis Gyro + 3-axis Geomagnetic sensor IC; GNSS module; FLASH memory IC; Power management IC, Li battery gas gauge controller ... 15 工程, 电子, 微控制器, 印制板布局, 电路设计 Feb 20, 2018 Feb 20, 20183天 ¥114
Altium PCB design I have a altium PCBdoc file. i am finding someone make the PCB. so he/she must route the PCB. PCB have already layout components. 43 电子, CAD/CAM, 电機工程, 印制板布局, 电路设计 Feb 20, 2018 Feb 20, 20182天 12时 ¥228
Time based rotating platform circuit Requirement for the project - 1. A slow rotating platform with a rotation speed between 15-20 sec for 10 degree and max weight to rotate will be 700 g. 2. A timer is required as the rotation should work for 3-4 mins and then stop. 3. A relay which is active for that 3-4 mins and then stops. 4. The whole setup will be in a box so if the box lid is opened then the rotation should stop and re... 13 电子, 微控制器, 电路设计 Feb 20, 2018 Feb 20, 20182天 11时 ¥211
Dot Matrix Display using microcontroller I want you guys to design a dot matrix display using any of the micro controller. 6 微控制器, 印制板布局, Arduino, 电路设计, 编程 Feb 20, 2018 Feb 20, 20182天 10时 ¥38
Air ionizer electric circuit circuit hi i have developed a Air purifier and completed all mechanical parts we need a freelancer who developed Air inoizer system for [链接已删除,请登录查看] bid serious guy only. 10 工程, 电子, 微控制器, 电機工程, 电路设计 Feb 20, 2018 Feb 20, 20182天 8时 ¥1229
dsPIC_CDC_USB I need to have sobroutines to read and write to USB CDC with a DSPIC33FJ64GP306A. I need to have only tested subroutines to write single char and string to USB. I attach schematic and main code to see the clock configuration....... 13 电子, 微控制器, 电機工程, 电路设计 Feb 20, 2018 Feb 20, 20182天 5时 ¥1219
processing pcb processing, layout and schematic in addition to powersupply modification 8 电子, 微控制器, 电機工程, 印制板布局, 电路设计 Feb 20, 2018 Feb 20, 20182天 5时 ¥950
Update of simple 2 layer PCB design and producing extended Gerber files (RS-274X) As a thermal solar installer, I'm in need of an updated design of a delta-T controller with approx 20 components. The current design has some end-of-live components and I want an alarm (piezo buzzer) added to the layout as an option. The current PCB has been reversed engineered in China, so the circuit diagram, PCB layout and BOM will be provided (in a ancient Eagle version). The PIC ... 42 印制板布局, 电路设计 Feb 20, 2018 Feb 20, 20182天 5时 ¥1940
Simulate a Neuromorphic Circuit in PSpice I have a MOSFET circuit which describes the neuron function. I need you to simulate this circuit in PSpice and get the desired results. 17 工程, 电子, 生物技术, 电機工程, 电路设计 Feb 20, 2018 Feb 20, 20182天 1时 ¥2864
电子, 用户接口 / IA, 印制板布局, 电路设计 Feb 19, 2018 Feb 19, 20181天 20时
Heating system analysis and design I have the concept idea of the simple heater but needs an experienced designer to design an energy efficient simple cooker to reach around 350 C. More details will be given. 15 工程, 电子, 机械工程, 电機工程, 电路设计 Feb 19, 2018 Feb 19, 20181天 19时 ¥912
Micro-controller Programming and Schematic Design I need someone who can make a project with the help of pic micro controller [链接已删除,请登录查看] will use a smoke sensor and temperature sensor and detect the fire and turn the alarm on. urgent required. only serious bidder bid. 9 电子, 微控制器, 电機工程, 印制板布局, 电路设计 Feb 19, 2018 Feb 19, 20181天 14时 ¥63
Electrical engineer needed with knowledge of physics, science, experiments Electronics, electric circuit build need. Physics, electromagnetism knowledge is a plus. Programming knowledge also a plus. More in PM. 34 工程, 电子, 电機工程, 物理, 电路设计 Feb 19, 2018 Feb 19, 20181天 12时 ¥76
Reviewing schematic diagram I am doing a project the in my home and I am using the attached diagram. That uses long wires to check a status (ON or OFF), Is this diagram correct? if you have done some industry products that uses such diagram then you can take this project, show some examples you have done before. 24 工程, 电子, 电機工程, 印制板布局, 电路设计 Feb 19, 2018 Feb 19, 20181天 3时 ¥139
I need some one who can write firmware for my STM microcontroller I am looking for someone who is good in embedded system and can prepare gadgets based on IOT. 12 微控制器, 电路设计, 编程 Feb 18, 2018 Feb 18, 201819时 26分 ¥895
PCB Design - Small Circuit Board - Specific Dimensions A tailored PCB required for a small space. Dimensions of space: Diameter 5.5mm, Length upto 60mm. PCB required to operate a Micro-Buzzer from a 9v Power Source. Ideally non-polarised. Designers will have to consider component sizes and dimensions as well as circuit layout. 55 电子, 电機工程, 印制板布局, 产品设计, 电路设计 Feb 18, 2018 Feb 18, 201815时 29分 ¥1056
Cellular Antenna RF Engineering We are looking for a RF engineer to help us with a cellular Cat M1 application (700 LTE). We would like to use an off-the-shelf antenna and interface it into our smaller PCB. We need a RF engineer to analyze the ground plane situation and advise us how to improve the performance of the antenna, specifically efficiency. It would be best if you had RF simulation software and experience and/or ant... 7 电子, 微控制器, 电機工程, 印制板布局, 电路设计 Feb 18, 2018 Feb 18, 201812时 59分 ¥2592
Draw a magnetic circuit on ansys maxwell and calculate flux density Draw and design on ansys 11.0, a simple magnetic circuit. The uploaded image shows three magnets. Replicate this drawning on ansys with the magnets and the coil on each magnetic. Obtain values for electric flux density. 8 电子, 机械工程, 电機工程, 有限元分析, 电路设计 Feb 17, 2018 Feb 17, 2018已经结束 ¥992
design minature sound circuit board using piezo speaker with solar power need minature circuit board design that uses a recorded sound chip (like for greeting cards), plays short track every 5 to 10 minutes on a small flat piezo speaker using solar power and a small battery for a 6 month life. need on-off switch and LED indicator 16 电子, 微控制器, 电機工程, 印制板布局, 电路设计 Feb 17, 2018 Feb 17, 2018已经结束 ¥988
Design a chip for AI Based video codec h.264 for face recognition in cloud AIM: DESIGN A CHIP FOR AI BASED VIDEO CODEC H.264 FOR FACE RECOGNITION IN CLOUD AND INTEGRATE WITH XILINX FPGA BOARD TEST OUTPUT. IAM EXPECTING TOTAL TIME PERIOD IS 6DAYS(25/02/2018) REGARDS D RAMANNA BANGALORE-INDIA [Removed by Freelancer.com admin] 2 Linux, 电路设计 Feb 17, 2018 Feb 17, 2018已经结束 ¥149
Small Electronic Project. I have a small problem to calculate resistance. There is one circuit. I want to calculate resistance of this system. That is easy for experts. Please bid if you can finish in 20 minutes. 9 工程, 矩阵及数学软件, 电機工程, 印制板布局, 电路设计 Feb 17, 2018 Feb 17, 2018已经结束 ¥190
Design PCB Payout on Altium Hello all, Required PCB layout design and use existing schematic in Altium. 66 电子, CAD/CAM, 电機工程, 印制板布局, 电路设计 Feb 17, 2018 Feb 17, 2018已经结束 ¥2782
need an expert in electrical engineering expert in transformers needed to do a small project 34 工程, 电子, 机械工程, 电機工程, 电路设计 Feb 16, 2018 Feb 16, 2018已经结束 ¥164
audio opamps change 400b soundcraft lme 49720 instead of the tl072.. possible too remove all electr. caps in audio Path with metal wire? stabilizing opamps with 100pf ceramic from v+/v- too ground .. having dc offset on output of first opamp when C3 & C4 are 220uf and all other caps replaced with metal wire + popping Crackling pots and faders.. is it possible to Fix this with Precision ceramic caps accros in ... 4 平面设计, 音频服务, 电路设计, 声效设计, 音频制作 Feb 16, 2018 Feb 16, 2018已经结束 ¥1196
Design a PCB for controlling a LPG filling scale our factory is specialized in manufacturing LPG bottling scales. Now we are planning to Produce our electronic controlled filling scale using a microcontroller-based control card, so can you support us in The issues related to design and manufacturing of this card. 34 电子, 电機工程, 印制板布局, 产品设计, 电路设计 Feb 16, 2018 Feb 16, 2018已经结束 ¥7369
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