Circuit Design is the process of designing electrical circuits to create a complete electronic system. A Circuit Designer is responsible for designing circuits, testing the board and components through simulations, troubleshooting any errors, and even prototyping the board by manufacturing a few before completing the entire circuit accurately. Through this intricate process, a Circuit Designer will be able to optimize the design with their expertise and creative talent to push out an efficient product.

Circuit Designers are knowledgeable engineers with a high level understanding of electronics engineering and components that can be used in a circuit. They also possess analytical skills as they must be able to calculate loads, power consumption and sophisticated circuit architecture that involves cause and effects to produce sound results. With extensive knowledge of hardware engineering, Circuit Designers are responsible for hardware selection, board sizing, and routing of signals.

Here's some projects that our expert Circuit Designer made real:

  • Automation systems built through electronic schematics
  • Electrical systems concepted through hand sketches
  • PCB designs implemented through industry standard software
  • High level radio networks designed through detailed concept papers
  • Power efficient circuits delivered with noise reduction features

These projects use both beginner and advanced electrical engineering techniques that our expert Circuit Designers are capable of delivering. With creativity, knowledge in engineering disciplines and product optimization experience, our Circuit Designers create reliable and innovative solutions for our clients’ projects.

We invite you to post your project on Freelancer.com so you can experience what our group of expert Circuit Designers have to offer. With their strong background in electronics engineering and creative problem solving, our freelancers can create dependable and optimized circuits for your project.

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    I'm engaged in a project that requires the examination of rectifier efficiencies, specifically the comparative efficiencies of bridge rectifier models at various loads. This task will utilize the LTSpice program. Here's what I need assistance with: - An expert-level command of modeling and analysis within LTSpice. - Familiarity and experience with various rectifier types, especially bridge rectifiers. - Proficient analysis skills to correctly compare the efficiencies of these rectifiers at diverse loads. - Strong communication skills to explain their findings clearly and concisely. Given that this is urgent, the expected timeline for the completion is ASAP. I look forward to working with someone who has a comprehensive understanding of rectifiers and their functioning on LTSpic...

    $129 (Avg Bid)
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    I'm looking for a professional with in-depth experience in microcontroller programming and hardware design to create a controller that's capable of operating through GSM, with a primary function of controlling electrical devices. Scope of Work: - Development and programming of the controller. - Setting up GSM operations for the controller. Ideal Skills: - Proficient in microcontroller programming. - Extensive knowledge of GSM communication protocol. - Experience in designing and developing device controllers. - Ability to create detailed project proposals. Please include a detailed proposal which demonstrates a clear understanding of the project's requirements and how you plan to achieve them in your application. All aspects of the project including the technical requirem...

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    LED Fitness Mat Development 6 วัน left
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    I am in need of a highly skilled developer for an exciting project. The task entails designing and developing a mobile app that will integrate with a rechargeable LED fitness mat. This project is to develop the LED mat primarily (Electronics and hardware). The mobile app integration will come after. The mat needs to be something bright and safe as it will be used by children. We need somehow to make it safe from the energy point of view and usage. Kids will be stomping to match the patterns. Key Functions: - Live workout tracking - Customizable LED patterns on the fitness mat via the app - Bluetooth connectivity for seamless interaction between the mat and the app The target platforms for this app are Android and iOS, therefore, any previous experience in cross-platform development ...

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    NDA
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    It is a 5-floor building including a cellar. The cellar and ground floor will be a shop, and the top 3 floors will consist of 3 flats each. On the first floor, there will be a communal area with a kitchen and a WC. Individual Floor Details: 1. Cellar and Ground Floor: - A single consumer box will serve both the cellar and ground floor. - The shop's consumer unit will remain in the cellar. 2. Top 3 Floors (Flats): - Each flat will have its own separate consumer unit. - The communal area and all stairs will have their own consumer box. 3. Communal Area (First Floor): - The consumer unit for the communal area, including the kitchen and WC, will be located in the kitchen. Additional Requirements: - Electric meters are installed in the basement. Wires need to be rout...

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    I am in need of an Electrical Engineer who has hands-on experience in designing bus bars for high current systems. I have a project that involves the creation of a copper bus bar capable of carrying 1000 Amps DC used to connect various electrical components. Key requirements include: - Bus Bar Material: The prime material for the bus bar should be copper due to its excellent conductivity. - Connective Capability: The bus bar's prime role is to serve as a conduit to connect different electrical devices. It must be expertly designed to efficiently distribute high voltage. - Heat Resistance: Given the high current passage, the bus bar should withstand high-temperature conditions without any compromise on performance and safety. I am keen on working with someone who can bring signifi...

    $134 (Avg Bid)
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    I'm currently working on a robotics mechatronics project and need a PCB designer specializing in KiCad software. You'll primarily be assisting me with: - Designing a PCB to provide a power supply for an existing general-purpose board based on the STM32H7 series. - Designing a PCB to read 4 AMS AS5047B rotary position sensors alongside 4 limit switches - Designing a PCB to control 4 BLDC motors with PWM Channel with Direction pins - Extracting an I2C port from the assembled PCB Your prior experience in these tasks would be a great advantage. A deep understanding of KiCad design software and STM32H7 series microcontrollers is a must for this project. Assist me in making my robotics mechatronics system dream come true!

    $503 (Avg Bid)
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    I'm seeking an experienced Electrical Engineer to design a small-sized custom Printed Circuit Board (PCB) with integrated ESP32 and DRV8833 motor control drivers and 18650 rechargeable bttery. - PCB Size: The PCB should be small-sized, built with quality and precision, and space-efficient. - Motor Control: It needs to control a DC Motor using DRV8833 motor driver, ensuring optimal performance and minimal signal interference. - Voltage Range: The PCB should be designed to handle an input voltage of 5V, ensuring it's safe and efficient. - Battery: The design should incorporate a rechargeable battery without compromising the compact size. The ideal candidate should have proficient skills and experience in PCB design, electrical engineering, and ESP32 integration. Knowledge of mot...

    $152 (Avg Bid)
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    $175 การประมูลเฉลี่ย
    40 คำเสนอราคา

    I'm looking for a competent professional who can transform images of electrical design into high-quality electrical schematics, block diagrams, and electrical system overviews. This will involve multiple pages of work, which should be properly labeled. • Software: Proficiency in AutoCAD Electrical is a must, as this is my preferred software for the production of the diagrams. • Bill of Materials (BOM): A basic component listing level of detail on the BOM would be sufficient for my requirements. • Compliance: It's crucial to note that the designs should be detailed and not bound by a specific electrical standard. If you have a firm grasp on producing accurately detailed electrical drawings, then this job may be for you. Bring your experience and skills to the t...

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    I'm looking for an expert in motor control systems who can help me synchronize two 24V DC motors to improve efficiency. The project involves designing and implementing a physical interface to control the motors. Ideal Skills & Experience: - Extensive experience with DC motors - Proficiency in motor control systems - Knowledge of physical interface design - Experience with handheld remote control systems Your Role: - Develop a way to synchronize two 24V DC motors for increased efficiency - Design a physical interface to control these motors - Ensure the system can be operated through a handheld remote control - Validate the system's performance and efficiency.

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    As an electronics enthusiast, I'm seeking a proficient LC Spice user who can conduct comprehensive analog circuit simulations. The attributes of an ideal candidate are: - Proficient in LC Spice for circuit simulation. - Understands analog circuits and how to effectively simulate them. - Capability to perform frequency analysis, transient analysis, and AC/DC sweep in the simulation. Your aptitude in these skills and tasks will contribute significantly to the success of this project. Familiarity with electronic component analysis and voltage/current measurements is a huge plus. I look forward to working with a professional who shares my passion for electronics.

    $87 (Avg Bid)
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    ESP32 Expert for Sensor-Integrated PCB Design 4 วัน left
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    I'm seeking an expert in ESP32, someone who has successfully designed and constructed a data-collecting PCB. This device will incorporate 4-5 sensors, such as temperature and humidity sensors etc. The main aim of these sensors is to gather relevant data for later analysis. A reliable power source is essential for this device, necessitating the use of a battery to ensure continuous functionality. In the event of a power interruption, the device should be capable of entering a deep sleep mode after successfully transmitting data. Key points regarding the project are as follows: The project must be completed within 15 days. The device needs to transmit compiled sensor data at specific intervals. The ideal freelancer for this task should be proficient in ESP32, PCB development, senso...

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    Prototype PCB Design in EasyEDA -- 2 4 วัน left
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    I am seeking an expert PCB designer experienced in EasyEDA for a prototyping project. Since the specific components haven't yet been decided, your expertise in prototyping and experience in working with a range of electronic components will be essential. The project timeline is flexible, and thoroughness and quality are more important than speed. Ideal Skills for this Job: - Familiarity with EasyEDA for PCB Design - Proficient in creating prototypes - Knowledgeable about a range of electronic components (Microcontrollers, Operational Amplifiers, RF Modules, etc.). - Excellent communication skills to provide updates and ask clarification questions

    $73 (Avg Bid)
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    My project requires a proficient individual to create a PCB design using Altium Designer. The task specifically details: - Crafting a moderate complexity circuit, encapsulating 10 to 50 components. - The construction of a double-sided PCB. The ideal candidate should possess: - Proficiency in Altium Designer. - Previous experience with designing circuits of moderate complexity. - Relevant experience in creating double-sided PCBs. Please provide samples of previous works if possible. This will be a great opportunity for those with the right skill set. Looking forward to your responses.

    $83 (Avg Bid)
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    Design PCBA 3 วัน left
    ยืนยันแล้ว

    Just design a single bulb led circuit board/driver/ module. Plugged into a 12volts motor vehicle USB port.

    $82 (Avg Bid)
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    I'm in the process of integrating a temperature sensor into a PCB circuit. Accomplishing this task requires in-depth knowledge and experience in programming in C++, Python, and Assembly language, as well as a deep understanding of both circuit design and sensor integration. Key requirements: - Proven experience in PCB circuit design, more specifically with sensor integration. - Proficiency in programming languages such as C++, Python, and Assembly language. - Detailed knowledge of temperature sensors and how to integrate them successfully into a PCB circuit. Your task would be to design a PCB circuit that integrates a temperature sensor while meeting the project requirements and timeframes. Interested specialists should demonstrate their history with similar projects and highlight...

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    I'm in need of a power electronics designer, proficient in designing power efficient modules for industrial environments. I'm working with an EC200U 4G module that runs on 3.8VDC, along with other peripherals that require 3.3V. The input power for the system lies in the range of 12-18 VDC. The power management circuit designed should: - Regulate Voltage: Ensure the voltage received by the EC200U module and peripherals is maintained precisely at their required levels. - Provide Battery Backup: Ensuring constant supply of power to the 4G module even when the main power source is unavailable. When main power is available, the battery should be charged and system is power from main power. Suitable candidates should have prior experience working with power electronics design, and...

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    PCB Duplication & Reverse Engineering 3 วัน left
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    I am seeking a knowledgeable freelancer to assist in a PCB reverse engineering project. The main purpose of this assignment is to replicate and duplicate an existing board. Key Project Aspects: - PCB Reverse Engineering - Replication and Duplication Fortunately, all the components of the board are readily available and do not contain any obsolete or hard-to-source parts. This eases the procurement process eliminating any sourcing related delays. A working sample of the PCB is available for reference to further simplify the task and ensure accuracy. Ideal Freelancer Skills/Experience: - Expertise in PCB reverse engineering - Adept at PCB replication and duplication - Ability to source components for PCB construction - Proven track record of successful similar past projects. By ...

    $156 (Avg Bid)
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    Expansive PCB Component Identification 3 วัน left
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    I am in need of an expert in PCB reverse engineering, with a primary focus on the component identification. For this project, I possess a physical circuit board, however, I'm unaware of what components have been used in it. The main goal is to identify these elements and their interconnections. Skills & Experience: - Profound knowledge in PCB circuitry and components - Experience in reverse engineering projects - Capability to work with physical PCB boards - Strong attention to detail in identifying unknown components Deliverables: - A detailed list and diagram of identified components and connections on the PCB.

    $153 (Avg Bid)
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    Interval Workout Circuit Design 3 วัน left
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    I'm in search of an expert in electrical engineering to create a unique circuit for timing a workout routine. The designed circuit should be capable of timing cardio exercises and strength training intervals for a seamless exercise regime. Key requirements are: - It should provide a signal for 1 minute of green light functioning as "exercise on", and 30 seconds red light acting as "exercise off". - This signals should be repeated cyclically until manually stopped. Ideal freelancers should have experience with circuit design, timing mechanisms, and they should have an understanding of fitness equipment or similar projects. This project offers an exciting opportunity to adapt traffic light technology for fitness purpose. If you're looking for a unique, cha...

    $436 (Avg Bid)
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    I need an electronics designer to create a circuit board for me. The project entails designing a compact round circuit board to get power from a small solar panel for the sole purpose of recharging a rechargeable battery, such as the LIR2032, ML2032, or ECR2032. The selected candidate should provide comprehensive documentation detailing the circuit's design, functionality, and rationale behind design choices. Key Requirements: 1. Solar Power Integration: The circuit board should utilize solar energy from a small-sized solar panel. 2. Battery Compatibility: The designed circuit board must be compatible with rechargeable batteries such as LIR2032, ML2032, or ECR2032 3. Documentation: Thorough documentation covering the circuit's schematic, layout, and operational principles is ...

    $435 (Avg Bid)
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    $566 การประมูลเฉลี่ย
    13 คำเสนอราคา

    I'm seeking a seasoned RF system engineer to leverage their knowledge and skills in my project. The individual will perform the following duties: - Design RF circuits - Conduct RF tests and measurements - Troubleshoot any emerging RF issues Past exposure to both wireless and satellite communication systems as well as radar systems is vital, with a particular emphasis on long-range systems exceeding 10 km. This competence will equip the professional to understand the practical and theoretical aspects of the project, thus successful execution.

    $1087 (Avg Bid)
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    Prototype PCB Design in EasyEDA 2 วัน left
    ยืนยันแล้ว

    I am seeking an expert PCB designer experienced in EasyEDA for a prototyping project. Since the specific components haven't yet been decided, your expertise in prototyping and experience in working with a range of electronic components will be essential. The project timeline is flexible, and thoroughness and quality are more important than speed. Ideal Skills for this Job: - Familiarity with EasyEDA for PCB Design - Proficient in creating prototypes - Knowledgeable about a range of electronic components (Microcontrollers, Operational Amplifiers, RF Modules, etc.). - Excellent communication skills to provide updates and ask clarification questions

    $173 (Avg Bid)
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    necesito diseñar el plano y la programación de un dispositivo electronico que se pueda conectar via ehernet a internet, que se pueda identificar, ejemplo puerta 1, 2 o 3 y que al recibir una señal especifica proveniente de internet con algun tipo de autenticación dispare un rele durante 3 segundos. con el fin de abrir remotamente unas puertas en un edificio

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    Silicon SPDT Low Voltage Microcircuit Development 2 วัน left
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    I am seeking a proficient electronics engineer or similar professional to design and develop a simple but reliable SPDT (Single Pole Double Throw) low voltage transistor microcircuit. The primary function of this microcircuit is switching between two circuits, not to amplify signals. We need to present a 5.1K GND to one of two GPIO pins on an MCU depending on the state of sensor output that throws a 5V high/low output on one single line Key Project Details: - The circuit should be designed to operate at low power levels to minimize power dissipation. - The preferred material for the transistor is Silicon. Ideal Skills and Experience: - Electronics engineering - Transistor theory - Circuit design and analysis - Experience working with silicon transistors and low voltage systems Your...

    $25 (Avg Bid)
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    I'm looking for an experienced Electrical Engineer who can design a versatile switch mode power supply. Key details and requirements: - Operate on a 220V AC input. - Produce a 48V DC output with two current variants: 10A and 30A. - The power supply should interface with an Arduino ESP32 which will be leveraged to control multiple parameters including voltage, current, and temperature. - Include appropriate safety features in the design, such as short-circuit, overload, and overheating protection. Ideal skills and experience: - A strong background in Electrical Engineering. - Proficiency in using Arduino ESP32. - Proven experience in designing switch mode power supplies. - A keen eye for safety consideration in designs. The successful designer will not only possess the above-...

    $22 / hr (Avg Bid)
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    kHz Sine Wave Generator Design & Build 1 วัน left
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    Design and build a sine wave signal generator. The specifications are as follows: - Sine wave output in the range of 40.0-50.0kHz. User adjustable via potentiometer. - The maximum output voltage 20V. - You select power supply (110VAC 60Hz to DC). - BNC output connector. - 3-digit frequency display (plug into PCB via a socket). Design circuit, create PCB layout and manufacturing files, and arrange for 4 PCBA prototypes to be built and shipped to me in the USA.

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    I'm in need of an experienced specialist in PCB designing, specifically for a medium-sized, high-power output audio amplifier (150W and above). Key Aspects: - The amplifier should support only analog inputs. - The desired audio power amplifier PCB should be of a medium size, suitable for high output power of 150W and above. Preferred Skills: - Proficiency in PCB Design - Familiarity with audio engineering concepts - Proven experience designing high-power audio amplifiers.

    $20 (Avg Bid)
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    Simple PCB Design from Sketch 1 วัน left
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    I require a professional to design a basic single layer PCB prototype using KiCad software. The design has to be brought to life from an existing drawing. Ideal Skills And Experience: - Proficiency in KiCad software for PCB design - Experience in creating basic single-layer PCBs - Understanding of circuit prototyping This is a rather straightforward assignment for someone with the right set of skills and experience. Your role will be instrumental in developing the prototype that forms the backbone of my product. Accuracy and attention to detail in your work are paramount, as the PCB layout will form the foundation of the final product. If this matches your skills and experience, I look forward to your proposals.

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    I am looking for a proficient PCB designer who is skilled in using Altium Designer. The task involves crafting an effective, energy-efficient, double-sided PCB. KEY REQUIREMENTS: - Expertise in Altium Designer Software - Experience with double-sided PCBs - Strong emphasis on ensuring energy efficiency Your technical proficiency in these areas will be crucial to the successful realization of my project. Efficiency-conscious design strategies will need to be employed to meet the project's primary focus of energy conservation.

    $15 (Avg Bid)
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    $22 การประมูลเฉลี่ย
    5 คำเสนอราคา

    We need an embedded systems engineer that has experience with high precision motor and sensor control. The engineer should have profound knowledge and experience with various electronic components in the market, because we need long lasting components for our project. We also need our system to be controlled with a mobile app. More details will be shared via chat. People with following skills bid on this project - 1) High precision motor and sensor control for dot matrix printing. 2) PCB design. 3) Embedded system app design.

    $195 (Avg Bid)
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    Qi-Compatible Wireless Charging Battery 1 วัน left
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    I require a qualified engineer to design and implement a small, slimline 5000mAh wireless charging battery that is compatible with all smartphones. This will need to be encased in a material such as silicone or similar, making the battery removable. The successful freelancer should display: - Proficiency in electrical/electronics engineering - Experience in building wireless charging solutions - Familiarity with the Qi wireless charging standard - Knowledge of smartphone battery requirements Please include references or examples of past similar projects in your bid. Thanks.

    $15 / hr (Avg Bid)
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    I am seeking an electronics engineer with deep expertise in circuit design, specifically mixed-signal circuits. Your Responsibilities: - Crafting and optimising a mixed-signal circuit design. Please Note: - Only those who provide detailed project proposals will be given serious consideration. Possessed Skills: - Extensive knowledge and experience in mixed-signal circuit designs. - Proof of similar projects will be highly appreciated. Your detailed proposal will make a significant difference in my decision. I'm excited to work with a professional who can deliver a state-of-the-art design.

    $5030 (Avg Bid)
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    As a beginner who's keen to learn Altium PCB board design, I am seeking a tutor who can help me understand and navigate Altium software. While the main focus will be on practical exercises, constructive feedback on my progress is highly appreciated. The tutoring sessions will be 1 hour each. An ideal tutor will have: - Comprehensive knowledge and experience in Altium PCB design - Excellent teaching skills tailored to beginners - Ability to provide practical exercises and meaningful feedback - Flexibility to adjust lessons according to my learning pace.

    $12 / hr (Avg Bid)
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    Advanced Eagle PCB & Schematic Design 12 ชั่วโมง left

    I need a skilled professional to assist me with a schematic and PCB design for a new electronic device. This project requires expertise in Eagle CAD platform and a strong understanding of both active and passive electrical components. The device is quite complex, containing a wide variety of components from resistors, capacitors, and inductors to transistors, diodes, ICs, connectors, sockets, and switches. Key Responsibilities and Requirements: - Creation of an advanced schematic and PCB design in Eagle CAD. - Familiarity with both active and passive components. - Ability to handle complex connections and features. - Experience in creating designs for high complexity devices. - In-depth knowledge of different components including resistors, capacitors, inductors, transistors, diodes, ICs...

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    Hardware development agency 7 วัน left
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    I am looking for a hardware development agency, who can implement a serial production of a device. We have a prototype on a layouted PCB with preselected devices. We develop already the firmware on it. We require a extremly experienced hardware vendor, who can take this prototype, the schematics and the layouted design to bring it to a final product. We will have different options of the devices (e.g. on radio support and on energy harvesting) The product includes: - ruggerized industrial waterproof case design - radio support for ...- wifi ...- GSM/LTE ...- GNSS ...- satellite communications ...- Bluetooth/BLE ...- ZigBee - internal / external antennas (later with waterproof connections) - powerplug (waterproof connections) - external sensors/actors connectivity - redundant batteries ba...

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    Compact PCB Design & ESP32 Firmware 4 ชั่วโมง left
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    I need a PCB with 7 5x7 displays with output via a DS Olimex type connector. It will be connected to an ESP32 board to control these displays and show alphanumeric characters. I need a quote for designing the circuit and the PCB layout in Altium. And I need a separate quote for the firmware to use on the ESP32 for control. I was thinking of using 74hc595D for controlling the displays by multiplexing. The power input for the display board needs to be 12V, and include a circuit to control the current and keep the LEDs on or control via PWM from the ESP32; I'm open to the designer's suggestion. I'm looking for a fixed price quote.

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    Battery-Powered Fridge & Gate Setup 3 ชั่วโมง left

    I'm looking for an expert in off-grid systems to create a battery-powered solution for a refrigerator and an automatic gate system. - The system will need to be designed to support less than 6 hours of operation for both per day - Additionally, include a real-time monitoring system to track power usage and system performance. The ideal freelancer for this project should be experienced in battery power systems and understand the demands and constraints of standard home appliances in such setups. Previous experience designing real-time monitoring systems is also a plus. System standard: AC Line (110Vac or 220Vac) Normal Operation, Load is connected to AC Line in case of power loss, it will be supplier by li -ion battery Li-ion battery always charged by AC line (need to use BMS...

    $443 (Avg Bid)
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    I need a power electronics expert. 3241 วัน left
    ยืนยันแล้ว

    I am in need of a power electronics expert who specializes in power converters. I have specific requirements for this project and need it to be completed as soon as possible. Skills and experience needed: - Expertise in power converters and power electronics - Strong knowledge of power semiconductor devices - Experience in power system analysis - Ability to work quickly and efficiently to meet tight deadlines

    $10 / hr (Avg Bid)
    $10 / hr การประมูลเฉลี่ย
    29 คำเสนอราคา

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