Circuit design jobs

I have a VERY simple circuit for a solenoid driver with external power mosfet (p channel). The driver is a DRV103u and turns the device on at 100% for a period, then PWM % after that to maintain activation. It works perfectly with the IRF4905PBF (TO220 package), but as soon as I test it with a IRF4905STRLPBF TO-263 (D2PAK), Surface Mount, it wont go to PWM and stays on full power. Datasheets show the IC's as virtually identical, so I need a solution to the problem, as I dont want to use a TO220 on an SMD PCB. I figure changing the 3k pull up will influence the behaviour, but would like a secind opinion.

We are seeking a high-quality design for our premium padel racket, the "Top End Racket." This racket is targeted at serious padel players who demand the best in terms of performance, aesthetics, and technology. The design should reflect a luxurious, cutting-edge, and technical feel while considering the features of the racket, such as the holes in the frame. The overall aim is to create a visually stunning and market-leading padel racket that stands out from the competition. Utilize a dynamic and eye-catching color palette that complements the carbon fiber texture of the racket. The color scheme should convey sophistication and modernity while allowing the design to pop. Colour palette must be white, light blues, greys, black - to use in which ever combinati...

I am looking for a PCB designer to create a circuit board for a Class-D audio amplifier. The project requires the following: Power Output: - The audio amplifier should have a power output of less than 50W. PCB Size: - The PCB should be designed to a specific size (less than 3 x 2 inches). The PCB will have two inputs one for the audio and one for the power source of +30VDC and -30VDC Input Source: - The amplifier will be used with an analog input source. Ideal Skills and Experience: - Experience in PCB design for audio amplifiers. - Proficiency in working with Class-D amplifier circuits. - Knowledge of analog input source compatibility. - Ability to design PCBs to specific size requirements.

I am looking for a skilled individual or team to design and develop a clamp earth resistance meter. This project requires expertise in electrical engineering and measurement accuracy. Requirements: - The earth resistance measurement must have a required accuracy of ±1%. - The preferred method for the meter to measure earth resistance is through the inductive method. - The maximum earth resistance value to be measured should fall within the range of 0-10 Ohms. Ideal Skills and Experience: - Strong background in electrical engineering and circuit design. - Experience in developing clamp earth resistance meters or similar instruments. - Proficiency in programming and firmware development for data acquisition and analysis. - Knowledge of inductive measurement meth...

I'm looking for a skilled and experienced freelancer to solder components onto my printed circuit board (PCB). I have a detailed schematic showing all components and their placement on the board, and there are more than 50 components that need to be soldered. This requires excellent soldering skills and a great deal of care and precision. This project is a high priority for me and I need to get it done quickly and right the first time. Preferred qualifications include experience working on PCBs and a proven track record of success in soldering PCBs with complex designs. If you can help me with this project, I look forward to hearing from you!

I am looking for someone to design a circuit for a mini HD camera input that can feed to four HDMI outputs. The project requires the following: - The circuit is simply live feeding camera video image to the four HDMI outputs - Desired resolution for the HD camera input: 720p or 1080p - The camera will be a typical circuit-sized camera (1cm x 1cm) - No specific brand preferences for the components used in the design, any reliable brand will do - Four HDMI outputs are needed that connecting any type of monitor will simply display the camera feed - Minimal power consumption, preferably in a 12v circuit Ideal skills and experience for this job would include: - Circuit design and PCB layout experience - Familiarity with HD camera inputs a...

I am looking for an experienced engineer to assist me with a project involving a simple analog mic circuit. I need to add an Op-Amp to increase the voltage by a factor of 10 for a simple microphone circuit. Input Voltage Range: The input voltage range for the mic circuit is 48VDC. Op-Amps Needed: Only one Op-Amp (AD743) is required for this circuit. Skills and Experience Required: - Strong knowledge and experience in analog circuit design. - Proficiency in using KiCad or TINA or Altium for circuit simulation and design - Ability to create a Bill of Materials (BOM) and create Gerber files. If you possess the necessary skills and experience, please submit your proposal for this project.

...for a freelancer who can design and build a Buck-Boost Converter for a power supply application. The converter should have the following specifications: * Input Voltage : 16-32 V DC * Output Voltage : 28V DC; 5 Amp with dimming facility from 10V to 28V using 10K pot. Skills and Experience: - Experience in designing and building Buck-Boost Converters - Knowledge of power supply systems and voltage regulation - Familiarity with power electronics and circuit design - Ability to select and integrate suitable components for the converter - Proficiency in simulation and analysis tools for converter performance evaluation The ideal freelancer should have a strong background in electrical engineering and power electronics. They should be able to provide a detailed des...

I am looking for a software-hardware engineer who can assist me with a project that requires expertise in both software development and hardware design. Skills and Experience: - Strong knowledge and experience in software development, including proficiency in programming languages such as C++, Python, and Java. - Expertise in hardware design, including circuit design, PCB layout, and component selection. - Familiarity with embedded systems and microcontrollers. - Ability to troubleshoot and debug software and hardware issues. - Strong problem-solving skills and attention to detail. Project Details: - The project can be completed remotely, so the ideal candidate should have experience working remotely and be able to effectively communicate and collaborate onli...

PCB Design for safety Application, - Complexity Level: Moderate level, - details will be provided, Experienced PCB designer is required to develop a circuit board for an safety application. The design should be of moderate complexity and capable of meeting the specific requirements of our project. Skills and Experience Required: - Proficiency in PCB design software, such as Altium Designer or Eagle - Strong understanding of industrial application requirements - Experience working with complex circuitry and components - Knowledge of best practices for PCB layout and signal integrity - Ability to collaborate with the client to incorporate specific components into the design If you have a proven track record in PCB design for industrial applicati...

Hello there! I'm looking for an experienced PCB designer to help me with a personal project. I am needing a single board design that is simple in complexity. The board should be designed as per my requirements, and have good quality components for it. Ideally, I'm aiming for the board to be low-cost to manufacture and meet all the necessary specifications. The PCB should be designed to enable the best performance and be reliable at the same time. I'm hoping to find someone who has a track record of successful PCB designs and who is familiar with the technical aspects of designing and testing printed circuit boards. So if you fit the profile, please do not hesitate to reach out and let me know more about your qualifications. I look forward to hearing from you!

...MQTT sending of it MS8 - phase preparation for serial production: - provide full detail schematics of the previous prototype - provide full BOM MS9 and later: if you have experiences with circuit board layouting, we would also award you the electronics design for a fully running hardware, which includes - battery power supply - optional USB Port supply - solar panel supply - external antenna connector - schematics and circuit board design of all mutally agreed things - selecting or designing the waterproof case with waterproof connectors - help with your suppliers for implementing the "zero series" on circuit and PCB assembly - help on suppliers for the finishing, means PCB, components, solar into one ready to use device Implementations: -...

...looking for an experienced electrical design engineer to assist with the design and engineering of an EV (Electrical Vehicle) for the transportation of goods. The specific tasks include circuit design, power distribution, power system, control and protection, and vehicle lighting design. - The project requires expertise in electrical engineering and design principles. - Knowledge of EV systems and components is essential. - The ideal candidate should have experience in designing and engineering EVs or similar electrical vehicles. - The electrical design needs to be completed within 1 month. - The client has specific requirements and preferences for the design, which will be provided upon hiring. If you have the necessary skills ...

...phases 380VAC 50Hz motor (10A each phase maximum current) I think is it possible to use same components except for the three phases version where I have to use a lower current sensor (12.5A or 15A for example) In the attached schematic I used hall current monitor like ACS711 for 25A of maximum current. I used TRIAC T3035 (30A maximum current). Important is the detection of over current in shor circuit condition. In this condition I use OCF line of current monitor to disable gate of TRIAC and save it. In the attached schematic is not present microcontroller because is not an important component in simulation. I need to calculate power dissipation of triac in the maximum current and to have the correct size of customized heatsink made with simply aluminum to dissipate the necessar...

...MQTT sending of it MS8 - phase preparation for serial production: - provide full detail schematics of the previous prototype - provide full BOM MS9 and later: if you have experiences with circuit board layouting, we would also award you the electronics design for a fully running hardware, which includes - battery power supply - optional USB Port supply - solar panel supply - external antenna connector - schematics and circuit board design of all mutally agreed things - selecting or designing the waterproof case with waterproof connectors - help with your suppliers for implementing the "zero series" on circuit and PCB assembly - help on suppliers for the finishing, means PCB, components, solar into one ready to use device Implementations: -...

I'm looking for someone to complete a commercial electrical drawing, 1 page, and have it professionally stamped by an engineer licensed to do work in the United States. The project relocates Panel L3 as a sub panel to L2 in circuit spaces 37/39/41 with 100amp breaker. Project requires Drawing E1.2 to be revised. IBC2018 Original city approved stamped drawing attached. Also attached is EIT schematic diagram detailing the change.

Planning WIFI for small-sized Apartment Building with Personal Use - Size of the apartment building: small (8-20 units) Total 270 sqm - Primary usage of WIFI in the building: Personal Use - Specifi...planning and setting up WIFI systems for apartment buildings. - Experience in designing networks that can handle high-speed internet connections. - Knowledge of the best practices for achieving multi-floor coverage. - Plan for everything including a dedicated router for the system that will connect to a dedicated internet circuit. - Choose hardware that is secure, low failure rates, has easy availability for purchase and easy to configure with a GUI. This is only for the project design, implementation is not included. Please provide examples of similar projects you have worke...

I am looking for a design for a Universal Solar Grid Hybrid EV Charger. There will be dual source input 230V, 50Hz Grid and Solar 90V - 150V DC input. Desired Output Voltage and current: - Dual output of 60V DC @ 15A and 72V DC @ 15A together Charging Speed: - Fast Charging, with a desired charging time of 1-3 hours EV Connector Type: - CCS Combo 2 (Combined Charging System) Skills and Experience: - Experience in designing EV chargers - Embedded system design and development of Hardware schematic, pcb, bom, Firmware code development and prototype testing. - Knowledge of different EV connector types - There should be OLED display and RS485 communication to remote. - The charger should design with suitable alarms, protection and trip mechan...

...MQTT sending of it MS8 - phase preparation for serial production: - provide full detail schematics of the previous prototype - provide full BOM MS9 and later: if you have experiences with circuit board layouting, we would also award you the electronics design for a fully running hardware, which includes - battery power supply - optional USB Port supply - solar panel supply - external antenna connector - schematics and circuit board design of all mutally agreed things - selecting or designing the waterproof case with waterproof connectors - help with your suppliers for implementing the "zero series" on circuit and PCB assembly - help on suppliers for the finishing, means PCB, components, solar into one ready to use device Implementations: -...

Seeking support from a electronics subject matter expert with skills in the below four specific areas of electronic circuit design. 1. Operational amplifier circuit design. 2. Instrumentation amplifier using three Operational Amplifiers. 3. Phase Locked Loop (PLL) - Must be able to work with the S-domain transfer functions for a phase locked loop, very similar it will look like a classic second order transfer function. 4. Reliability, Mean Time Between Failure analysis

Perform design of an instrumentation amplifier

I am looking for a skilled individual who can help me develop a circuit and program on a PIC microcontroller. The main function of the circuit will be to control a system. While I have some components in mind for the circuit, I am open to suggestions from the freelancer. Skills and Experience: - Strong knowledge and experience with PIC microcontrollers - Expertise in circuit development and programming - Ability to recommend and select appropriate components for the circuit - Good communication skills hindi /english to discuss and understand the client's requirements and suggestions

I am in need of researching Missouri's for data related to a circuit court judge and their sentencing habits. Specifically, I am looking for all available records of their sentencing data, to be presented in the form of a spreadsheet. My team believes that there may have been an excessive amount of sentencing done by this judge, resulting in increased costs to taxpayers as well as an unnecessary strain on the prison system. We are hoping that this data will provide us with the evidence required to support our allegations. This is a crucial project that needs to be handled professionally and with utmost attention to detail. Experience in researching case law and court records is preferred. Accuracy is key and any data presented in the spreadsheet must be as up to date and com...

create a circuit diagram Arduino program with a schematic diagram Ping me for more details

Project Description: I am seeking someone with Electric, LTspice, IRSIM experience for a circuit design project. Specific Experience: - Proficiency in Electric software - Familiarity with LTspice and IRSIM Nature of Project Task: - Circuit design - Simulation modeling - Electrical analysis Preferred Method of Communication: - Instant messaging Ideal Skills and Experience: - Strong background in electrical engineering - Experience in circuit design and simulation - Proficient in using Electric, LTspice, and IRSIM - Effective communication skills through instant messaging If you have the necessary experience and skills in Electric, LTspice, and IRSIM, and are proficient in circuit design, simulation modeling, and el...

3D Modeling Task: Background: =========== We build small electronic modules based on a modular platform. Each finished product consists of: • A circuit board with electronic signal connectors attached to it • An extruded aluminum enclosure • Front end plate with holes for the signal connectors • Rear end plate with holes of the signal connectors Here is an example of a finished product (view in any browser other than Safari/macOS): Many of our customers have asked us for 3D models of our products, but we do not have any 3D modeling capability in our company. We did have one customer create a complete model of one product (PRL-425T, shown on page linked above with the actual model linked below), and we would

I am looking for a freelancer to create electrical wiring diagrams that are moderately detailed. No specific requirements or standards need to be followed since there are no specific demands. The diagrams should be of a moderate level of detail. The project should include circuit diagrams, network diagrams, and electrical wiring diagrams.

I am looking for a freelancer experienced in circuit design to assist me with creating a thermoelectric generator circuit for charging batteries. The desired output power of the generator should be in the range of 100-500 Watts and I have specific size and weight restrictions that must be met. With this project, I am hoping to find someone who can provide an innovative solution to my specific requirements. I am looking forward to hearing from experienced freelancers who are interested in the project. Thank you for your consideration.

Adapt the circuit to the new technical requirements, integrating external LoRa module and GPRS external module.

Scope start date: October the 4th. Scope finish date: October the 7th. Scope duration: 6 hours of work for an experienced individual Seeking support from a electronics subject matter expert with skills in the below four specific areas of electronic circuit design. 1. Operational amplifier circuit design. 2. Instrumentation amplifier using three Operational Amplifiers. 3. Phase Locked Loop (PLL) - Must be able to work with the S-domain transfer functions for a phase locked loop, very similar it will look like a classic second order transfer function. 4. Reliability, Mean Time Between Failure analysis

...MQTT sending of it MS8 - phase preparation for serial production: - provide full detail schematics of the previous prototype - provide full BOM MS9 and later: if you have experiences with circuit board layouting, we would also award you the electronics design for a fully running hardware, which includes - battery power supply - optional USB Port supply - solar panel supply - external antenna connector - schematics and circuit board design of all mutally agreed things - selecting or designing the waterproof case with waterproof connectors - help with your suppliers for implementing the "zero series" on circuit and PCB assembly - help on suppliers for the finishing, means PCB, components, solar into one ready to use device Implementations: -...

...seeking someone with experience in electronic circuit design and familiarity with EasyEDA to create a schematic that controls a 3-digit, 7-segment display. Each segment of the display has a forward voltage of around 15V. While it might be possible to use a MAX7219, it alone is not sufficient to handle the required voltage. Additional components or alternative solutions would be needed to achieve the objective. Requirements: The design must be done in EasyEDA. The circuit should be capable of controlling a 3-digit, 7-segment display with a forward voltage of 15V for each segment. A Bill of Materials (BOM) must be provided along with the schematic. The freelancer is expected to provide support in case of any questions or issues with the design. Deliver...

I am looking for a skilled electrical engineer to design a milli voltage booster circuit for my project. The circuit should meet the following specifications: Input Voltage Range: - The desired input voltage range for the milli voltage booster circuit is 1mv to 15v DC. Output Voltage Range: - The desired output voltage range for the circuit should be regulated and include the following options: 1.5v DC, 3.3v DC, 5v DC, 12v DC, and 15v DC through adjustable potentiometer. Current Output: - The required current output of the milli voltage booster circuit should range from 1mA to 7A. Ideal Skills and Experience: - Strong knowledge and experience in electrical engineering and circuit design. - Expertise in designing voltage boosters ...

I am in need of an experienced Electrical Engineer who specializes in PCB design and schematic. The desired outcome of this project is to create a prototype development. I am open to suggestions and do not have any specific requirements or specifications for the design. The timeline for this project is immediate. Ideal Skills and Experience: - Extensive experience in PCB design and schematic - Strong knowledge of circuit optimization - Proficient in troubleshooting and debugging electrical systems - Ability to work quickly and efficiently to meet immediate deadlines

I need someone to build a working prototype for my Push To Talk muting circuit. This prototype will help me raise working capital. See: An engineer worked on it for me and made a schematic. I would like you to check the schematic for errors and then build me a prototype using the supplied schematic.

I am looking for a skilled electronic project designer who can help me create an electronic card that is capable of producing sound voices based on...the ability to retrieve different sounds when a specific input pin is activated, all without the need for internet or WiFi connectivity. Budget: Less than $100 Application: Commercial use Sound Quality: Professional sound quality Ideal Skills and Experience: - Strong knowledge and experience in electronic circuit design - Proficiency in programming and coding for sound production and retrieval - Understanding of input pin activation and integration into the electronic card design - Familiarity with creating systems that do not rely on internet or WiFi connectivity - Experience working on projects with professional so...

...Experience: - Experience in designing and prototyping LED fretboard markers for electric guitars - Knowledge of electrical engineering and circuit design - Familiarity with guitar components and installation processes Project Overview: - I am looking for a skilled freelancer who can help me create a prototype of LED fretboard markers for my electric guitar. - The LED fretboard markers should be designed to fit an electric guitar. - The desired color scheme for the LED fretboard markers is single color. - The freelancer should have experience in designing and prototyping LED components for guitars. - Knowledge of electrical engineering and circuit design is required to ensure proper functioning of the LED markers. - Prior experience with guitar components and...

I have a rectifier with output 80 amps. Need a circuit for changing polarity of the output current

...PCB design to help us address and resolve conducted emissions issues in our product's switching power supply module. The goal is to reduce radiated conducted emissions and ensure compliance with electromagnetic compatibility (EMC) regulations. Responsibilities: Analyze the existing switching power supply circuitry and identify areas contributing to conducted emissions. Propose modifications to the circuit design to minimize radiated emissions and enhance electromagnetic shielding. Conduct comprehensive testing, including conducted emissions testing (access to facilities capable of Radiator Conducted Emissions testing required), to verify the effectiveness of the modifications. Collaborate with our team to refine the design changes and iterate as needed...

Circuit conditioner for force sensor. This is a 2 part project, I need a simple PCB desgined as well as a arduino programming. The PCB will be enclosed in a billet aluminum case that I will make myself. Arduino; It will use a 128x64 OLED Display with I2C and 3 push buttons for user setting. Push button are Up, Down, Menu/OK. The arduino will feed 5v to the force sensor and read the analog voltage coming back. There is 6 setting to be set by user; - Resting voltage reset --> Set the voltage of the force sensor with no forward or reverse force applied - Pull Force --> Set the voltage when force sensor is being pulled - Pull Force Deadband --> Set the deadband of the pull force - Push Force --> Set the voltage when force sensor is being pushed - Push Force Deadband --> ...

create a circuit diagram Arduino program with a schematic diagram Ping me for more details

...framework. Simultaneously, we aim to incorporate interior and exterior design elements that conceal the typical container structure, resulting in a finished product that closely resembles a conventional house. While cost-efficiency remains our primary focus, the secondary objective is to emphasize design aesthetics. Functionality is of utmost importance in our approach, ensuring that, for instance, a single connection point can serve both water and electrical needs. What We Need from You: 1. 3D Models of the Container Houses: Create screeched (Not in detail, blach and white, like with a pencel) 3D models of six container houses in various sizes and styles. These models should encompass the overall appearance, facade design, and interior furnishings. 2. Floor Plans:...

I need an ALTIUM schematic with a TRIAC section to power on AC motor with 230Vac single phase (L+N) or 380Vac three...and 10A in three phase (10A in each phase) I would use current monitor like ACS71240 or similar to read current in normal condition with microcontroller. I prefer to detect short circuit condition with ACS71240 but without microcontroller, with analog section indipendent from microcontroller. In short circuit condition microcontroller detects short circuit but protection with power off of TRIACS is indipendent from microcontroller. Requirements : 1) Choise TRIAC with good value for money 2) Design analog section to detect short circuit condition in output and power off TRIAC regardless of microcontroller 3) Design current monitor s...

I am looking for a freelancer to design a power supply PCB for a prototype. The PCB should have the following requirements: The board should create multiple voltage ports from a single battery with indicators and switches. Additional work opportunity - Battery charging port and usage statistics reporting. Output Voltage: 5V, 12V, 19V, 24V - The power supply should be able to output these voltages as per the project requirements. PCB Size: No specific requirement - I am open to any size for the PCB design. Intended Use: For a prototype - The power supply PCB will be used for a prototype, so it should be designed accordingly. Ideal Skills and Experience: - Experience in designing power supply PCBs - Knowledge of circuit design and layout - Familiarity with vo...

We have an existing basic and very small analog circuit (6 components) but we need to increase its level by +20 dBu by adding an Op-Amp without affecting other components DC voltage requirement.

I am looking for someone who has the use of an electrical analysis tool such as Etap to calculate the short circuit current for an isolated generation power plant 5MW 33kV 60Hz

Looking for individuals who are interested in creating interesting lighting effects for architectural models. From concepting and writing the program needed for the leds to behave as intended, designing the pcb needed for the lights to work, to designing the entire circuit and coming up with the circuit schematic. BREAKDOWN OF PROJECT Dimensions: Measurements are in mm (lxbxh) 2 components – architectural model with a case below to hold electronic components Architectural model (brass):550x430x120mm Approx. Case (wood): 610 x 490 x 60 Approx. All electronics will be placed in the case but have wires going up into the architectural model above and the lights are placed around in the model (picture attached in post for further understanding of model) The project is to...

Need electronics engineer to make a product circuit in cad and make simulation

I am looking for a skilled PCB layout and design expert who can assist me in creating a schematic or circuit diagram for a multi-layered PCB. The intended application of the PCB is for industrial equipment. Skills and experience required: - Proficiency in PCB layout and design - Ability to create a schematic or circuit diagram - Strong knowledge of multi-layered PCBs - Experience in designing PCBs for industrial equipment

Electrical Engineering Project - Entry-level I am seek...specification or blueprint. - The ideal candidate for this project would be an entry-level electrical engineer who is eager to gain hands-on experience. - The project will involve designing and implementing electrical systems for a specific application. - The candidate should have a basic understanding of electrical engineering principles and be able to work independently with guidance. - Knowledge of circuit design, power systems, and control systems would be beneficial for this project. - The candidate should also have good problem-solving skills and be able to troubleshoot and debug electrical systems. - Attention to detail and the ability to follow instructions accurately are essential for the successful completion...