Kĩ thuật điện Jobs

I have a brand-new Nest Thermostat that needs to be mounted and wired in my living room. Power, common wire, and Wi-Fi are already available nearby; what I need is a clean, safe installation that leaves the wall tidy and the unit powering on correctly. Once the thermostat is physically in place and confirmed to be working, I’ll take care of all the software setup and scheduling myself, so no post-install configuration is required from your side. Please bring the appropriate tools for low-voltage HVAC wiring and have experience with Nest or similar smart thermostats so the job is completed in one visit without surprises. Let me know your expected timeframe and any questions you might have about the existing wiring before we schedule.

I need single-sided, double-sided, and full multi-layer PCB layouts created for mixed-signal work. The boards combine analog and digital circuitry and will be used across embedded control, RF, and other high-speed applications, so careful impedance control, differential-pair routing, and solid mixed-signal grounding are essential. Altium Designer is my main environment, yet I can seamlessly integrate files produced in Proteus, KiCAD, Eagle CAD, EasyEDA, or even Multisim, so feel free to use whichever of those platforms fits your workflow best. What I expect from you: • Complete schematic capture and net-validation • Fully routed PCB layout that passes DRC and is ready for fabrication • Gerber (or ODB++) files, drill data, and a clean BOM suitable for procurement ...

Residential Building Inspection Checklist Preparation IMPORTANT: All deliverables must be prepared entirely in Arabic language. The Saudi Building Code (SBC) shall be used as the primary reference. We are looking for an experienced Civil or Architectural Engineer with a strong background in QA/QC and residential construction inspections to prepare a comprehensive inspection checklist for residential building projects. Scope of Work: 1. Structural Works Surveying Excavation Backfilling & Compaction Plain Concrete Foundations & Grade Beams Columns Beams Slabs Stairs Blockwork 2. Finishing Works: Waterproofing Thermal Insulation Plastering Floor Finishes (Porcelain, Ceramic, Marble) Gypsum Ceilings Painting Aluminum Works Glass Works Wooden Doors Steel Doors Facade Works External ...

I'm seeking an experienced engineer to connect push-button electronic switches to linear actuator mechanisms. This setup is intended to automate a process. Key Requirements: - Expertise in integrating electronic switches with actuators - Proficiency with push-button switches and linear actuators - Knowledge of automation systems and safety protocols - Strong problem-solving skills Ideal Skills and Experience: - Electrical engineering background - Hands-on experience with automation projects - Familiarity with wiring and circuitry Please provide examples of similar work and relevant qualifications.

Estoy desarrollando un proyecto personal y necesito el diseño de un PCB que me sirva como prototipo de prueba. El circuito debe combinar dos requisitos clave: alta durabilidad y bajo costo en la fabricación. Conexión wemos d1 r2 + módulo rfid lora + módulo r200 uhf rfid + solar charger 18650 Qué espero recibir • Esquema eléctrico completo. • Diseño del PCB listo para producción (archivos Gerber, lista de taladros y diagramas de montaje). Lineamientos técnicos • Pistas y separaciones acorde a buenas prácticas de fiabilidad. • Selección de materiales y acabados pensados para soportar uso repetido en un entorno de laboratorio personal. • Número de capas optimizado par...

I’m experiencing suspicious radio-frequency activity that appears to shadow me from place to place. To put the matter to rest—and, if warranted, take legal action—I need a qualified RF engineer to carry out a comprehensive signal analysis, identify any illicit transmitters, and compile hard evidence. Scope of work • Perform an on-site and near-site sweep that covers my home and the immediate surroundings, with attention to possible satellite-related links. • Use professional-grade spectrum analysers, SDR setups, near-field probes, and direction-finding gear to hunt for audio bugs, covert video cameras, and GPS trackers—each is a genuine concern. • Log every anomaly, capture signal characteristics (frequency, modulation, duty cycle, power level,...

A dedicated PCB will drive a self-service car-wash “vendo” unit built around an Arduino Nano. The board must accept the pulse output from a standard electronic coin slot, translate each valid coin into the required runtime, and use that signal to energise five independent relays that handle pumps, valves, or lights. All relays share a common 12 V source, yet the Nano and logic lines stay safely at 5 V, so on-board regulation (12 V → 5 V buck or linear, as you judge appropriate) is part of the layout. The relays themselves need fly-back protection, status LEDs, screw-terminal or JST headers for easy field wiring, and clear silkscreen labelling. A USB-B or tag-connect footprint for in-circuit programming is also required. Deliverables • Complete schematic (KiCad...

I'm looking for an experienced PLC programmer to work on SPM (Special Purpose Machine) manufacturing. The ideal candidate should be proficient in Mitsubishi PLCs. Key tasks include: - Programming PLC logic - HMI development - System troubleshooting Ideal Skills: - Expertise in Mitsubishi PLC programming - Strong background in HMI development - Proven troubleshooting skills Please provide examples of similar work done and relevant certifications.

I need a compact, production-ready circuit board that acts as the main control system for a self-service car-wash vending unit. Its first responsibility is to handle payment processing—accepting coins, bills, and potentially a simple cashless module—then trigger the wash cycle once payment is validated. You will translate this into a complete hardware package: schematic, multilayer PCB layout, and a cleanly organised BOM with readily available components. I will provide the pin-out for the existing coin validator and the relay map for the wash equipment; you make sure the board routes power safely, isolates high-current lines, and exposes clean connectors for future add-ons such as water-flow control and a small customer display. Because the installation sits in a damp ou...

I have a steady flow of electrical projects that range from single-family homes to busy commercial spaces and light industrial facilities, and I need one reliable, licensed electrician who can confidently take on every aspect of the work. On the residential side you’ll be handling complete wiring or rewiring, main service and sub-panel upgrades, and both interior and exterior lighting installations. The jobs can involve any room in the house—living areas, bedrooms, kitchens, bathrooms, garages, even patios and garden zones—so versatility and clean workmanship are essential. Beyond homes, I also receive commercial and industrial calls that demand the same level of precision and code compliance. If you can read plans, size conductors correctly, pull permits when required,...

I’m wrapping up a grid-tied photovoltaic project and need a seasoned solar designer to finish the electrical side cleanly. The panels are already chosen, the mounting points fixed, and I have a preferred list of brands for modules, inverter, optimisers, disconnects and the solar-assisted water-heater interface. What’s missing is a complete, permit-ready electrical package and clear guidance on how every device ties together. Here’s the work in plain terms: • Design the final stringing plan, conductor sizing, over-current protection, rapid-shutdown path and grounding in full compliance with the latest NEC/local code. • Produce DWG drawings that show single-line, three-line and physical layout—including the hand-off to my existing distribution board and ...

I have an all-analog circuit that I now need translated into a clean, production-ready hardware package. The job is two-fold: first, capture the complete schematic; second, turn that schematic into a compact, battery-powered PCB layout that is ready for fabrication. Because every stage is strictly analog, component placement, trace routing, and grounding must be treated with the usual care to keep noise and drift to a minimum. The board will run solely from a battery supply, so please incorporate thoughtful power-rail filtering, low-quiescent-current regulators where helpful, and clear test points for current-consumption checks. I’m comfortable with KiCad, Altium Designer, or Eagle—use whichever you prefer, as long as the final files are fully editable. Deliverables • E...

I am ready to prepare a full primary-engineering design package for your AIS, GIS, Wind-farm or FACTS substation, taking the project from concept through to construction-ready drawings and a quantified Bill of Quantity. My scope covers every critical drawing and calculation normally required by utilities, EPCs and independent power producers. You will receive the following discrete deliverables, each issued in native AutoCAD (DWG) and PDF, with supporting calculation sheets in Excel or ETAP as appropriate: • Single Line Diagram (SLD) if needed • Protection & metering SLD if needed • General layout plan and sections • DSLP and detailed equipment layouts • Earthing / grounding layout with step-touch voltage report • Cable trench layout and schedul...

I need an expert to design the cooling system for an Electric Vehicle Supply (EVS) motor. The cooling system is critical for maintaining optimal operating temperatures and ensuring the motor's performance and longevity. Key Requirements: - Design an air cooling system for the motor - Collaborate with me to ensure the cooling system integrates seamlessly with the overall motor design Ideal Skills and Experience: - Experience in designing cooling systems for electric motors - Strong understanding of thermodynamics and heat transfer - Proficiency in motor design, specifically in the context of EV applications - Ability to create detailed design documents and schematics Please provide relevant portfolio and experience in your bids.

I need a Pre-Amp with volume, bass, and treble controls designed for professional audio equipment. Additionally, I require a 2-way and 3-way Active Cross-Over that is variable, paired with a high-power Class D Power Amplifier capable of delivering between 100W to 500W. The setup should be suited for professional audio applications. Key Requirements: - Features: Pre-Amp with Volume, Bass, Treble, and Variable Active Cross-Over (2-way and 3-way) - Inputs supported: XLR and RCA - Power Output: 100W to 500W Class D Power Amp Preference: - Engineers located in India Ideal Skills and Experience: - Expertise in designing Pre-Amplifiers and Class D Power Amplifiers - Experience with Active Cross-Overs (both 2-way and 3-way) - Knowledge of professional audio equipment design and integration - Pr...

I’m looking for a licensed electrical engineer to evaluate every outdoor circuit, fixture, and panel on my home. The job is strictly an inspection—no wiring or design work—so the focus is on identifying safety hazards, code violations, load issues, or signs of wear before I schedule any upgrades. The property includes exterior lighting, a pool pump, two sub-panels, and a detached garage feed. You’ll need to open boxes, verify grounding and bonding, test GFCI protection, check conductor sizing, and confirm that everything meets the latest NEC and local residential codes. Deliverables • A written inspection report that notes each finding with reference to the applicable code section • High-resolution photos of any deficiencies or areas of concern &bu...

Target Specifications Application High Voltage Electric Scroll Compressor for EV Thermal Management Motor Type Interior Permanent Magnet Synchronous Motor (IPMSM) Radial Flux Architecture Supply Voltage => 400–800 V DC Compatible up to 900 V DC Output Power => Continuous: 8–18 kW Operating Speed Rated Speed => 3,500–4,000 RPM Maximum Speed => 7,000 RPM Cooling => Refrigerant or Liquid Cooled Duty => Continuous Automotive Operation Preferred Software Experience with one or more of: ANSYS Maxwell Motor-CAD JMAG FluxMotor Infolytica MagNet

Vui lòng Đăng Ký hoặc Đăng Nhập để xem thông tin.

I have a complete written pinout for a small board built around an ESP32-WROOM module, I have the circuit assembled with bare wires and I now need that schematic made in cad as a two-layer PCB in KiCad. The board will have two LDO regulators, a TP4055 Li-ion charger, an STI3408B buck converter and a 24-pin FPC connector for a camera, and assorted passive components. The more compact the pcb the better. You will receive: • the pin-by-pin connection list and a sample kicad assembly with the components all on it. What I expect back: • the complete KiCad project (schematic, PCB, libraries) • production-ready Gerber/NC drill files

need 200 Drawings of Semiconductor Engineering and Manufacturing engineering open to pay but drawings should not be AI or Google generated....i will try some sample 5 drawings and if they are passed then i will take the rest. Per Drawing i will pay $5. i am looking for Engineering drawings from Specialized domains : 1. Semiconductor Engineering 2. Manufacturing Engineering 3. Utilities and Power Systems 4. Robotics & Automation

I need a high-voltage gas insulated switchgear (GIS) consultant designed specifically for industrial applications. The switchgear must operate at voltages 138kV and prioritize a compact design. Key Requirements: - High-voltage operation ( 138kV) - Compact design for space efficiency - Suitable for industrial applications Ideal Skills and Experience: - Expertise in designing gas insulated switchgear - Strong background in high-voltage electrical systems - Experience with industrial application requirements - Ability to create compact and efficient designs You must have demonstrated experience with at least 5 major industrial or utility projects whith 69KV or higher GIS gear installation. References must be supplied and will be verified. Please provide examples of previou...

We need an industrial controller board designed from scratch and delivered as a demonstrated, working prototype. The board mounts inside a vending machine and is powered from the machine's bus. It communicates over two independent industrial serial interfaces — one toward the vending machine controller, the other toward the money-collection equipment — and reports to an external service over the network. It also carries serial and USB ports for peripherals. Scope of work Turnkey, from requirements to a working prototype: Schematic and PCB, in fully editable source files Complete BOM with manufacturer part numbers and costs at volume Fabrication package 3–5 assembled prototypes, demonstrated functional Bring-up report with real measurements Design and integration d...

Je souhaite développer une application web capable de générer automatiquement le schéma 2D et la modélisation 3D d’une armoire électrique à partir du BOQ de la solution. Type saas avec abonnement mensuel avec nombre de projets,chaque user a une profile . Fonctionnalités attendues • Importer le BOQ comme source principale des données et identifier chaque composant. • Intégrer dans les vues 2D et 3D les composants électriques, les accessoires d’installation ainsi que les panneaux et boîtiers. • Permettre la modification à la volée des dimensions de l’armoire, de la disposition interne des composants et du type d’accessoires (goulottes, barre de ter...

I’m rolling out a series of AC charging stations for electric vehicles and I need a senior-level, industrial electrical engineer to steer the design and layout work—especially the power-distribution side of things. Your practical plant-floor experience is critical because these chargers will tie into existing industrial infrastructure rather than typical commercial service panels. Here’s what I’m looking for you to tackle: • Produce and/or refine single-line and layout drawings that show transformer sizing, feeder runs, grounding and protection schemes. • Run load calculations and voltage-drop studies (ETAP, SKM, or a comparable tool is fine) so each site can be signed off by utility inspectors without redesign loops. • Recommend switchgear, bre...

I'm looking for an experienced PCB designer to create a control board for my standby generator. The PCB should manage an Automatic Transfer Switch (ATS) and engine control, and should include: SPARXX ATS REV A – PCB DESIGN SPECIFICATION Project Design a production-ready PCB-based Automatic Transfer Switch (ATS) controller to replace an existing relay/timer panel while maintaining the same operating logic. Deliverables Required Complete KiCad 9 project Schematics PCB Layout BOM Gerber files Pick and Place files Programming header Source files PCB Size Approximately 3.5" × 7" × 0.5" maximum Reserve approximately 20% of board space for future expansion. Power Inputs: 120 VAC 12 VDC Generator Supply Board must automatically power from either sour...

I need a comprehensive building design for a golf simulator commercial property, including electrical plans for permit approvals. Key Requirements: - Design must include: - Simulation area - Reception area - Electrical plans are essential - Must meet all local building codes and regulations Ideal Skills & Experience: - Architecture and electrical engineering expertise - Experience with commercial building designs - Knowledge of permit approval processes Please provide samples of similar work done.

I need a comprehensive building design for a golf simulator commercial property, including electrical plans for permit approvals. Key Requirements: - Design must include: - Simulation area - Reception area - Electrical plans are essential - Must meet all local building codes and regulations Ideal Skills & Experience: - Architecture and electrical engineering expertise - Experience with commercial building designs - Knowledge of permit approval processes Please provide samples of similar work done.

My storefront’s roller shutter is no longer operating smoothly and I need a skilled technician to put it back into perfect working order. The priority right now is a proper repair: inspect the system, pinpoint the fault, supply or recommend any replacement parts, and carry out the fix so the shutter opens and closes effortlessly again. You can expect straightforward access to the site, clear communication from my side, and prompt approval once the shutter works reliably, runs quietly, and meets basic safety checks. If the job reveals deeper issues—whether with the motor, slats, or track—I’m open to your professional advice and added work as an agreed follow-up. Please tell me your estimated timeframe and any material needs so we can get started right away. 40-50 ...

I'm looking for a skilled engineer to design and develop a GPS receiver primarily for navigation transmit and receive the signal over rf antenna Key Requirements: - The GPS receiver should provide accurate and reliable navigation data. - It must be designed to integrate seamlessly - The design should prioritize user-friendly interface and experience. Ideal Skills and Experience: - Proven experience in GPS technology development. - Strong background in hardware design and software integration. - Ability to create detailed, technical project proposals. Please include detailed project proposals in your application.

Scope of Work The lighting design shall include, but not be limited to, the following: Develop a complete lighting layout for all interior and exterior areas of the villa. Determine the optimal location of every lighting fixture based on: Interior layout Ceiling design Furniture arrangement Architectural elements Room functions Select the appropriate lighting fixture type for each area, including but not limited to: Downlights Spotlights Linear lighting Cove lighting Wall lights Pendant lights Chandeliers Stair lighting Landscape lighting Façade lighting Pathway lighting Under-cabinet lighting Specify for every fixture: Type Dimensions Finish and color Wattage Lumen output Beam angle Color temperature (Kelvin) CRI (Color Rendering Index) IP rating (where applicable) Create a balance...

Engineering Drawing & Technical Diagram Creation (Freelance Opportunity) Scope of Work: Create 100% original engineering/design drawings in PDF (or JPG where requested) specifically from the domains of Telecommunications and Utilities & Power Systems. Examples include mechanical CAD drawings, assembly drawings, exploded views, electrical schematics, circuit diagrams, PCB layouts, block diagrams, control system diagrams, architectural floor plans, civil blueprints, P&IDs, process flow diagrams (PFDs), manufacturing layouts, factory layouts, robotics and automation layouts within these specified fields. Important Requirements: The drawings must be your own original work. The following will NOT be accepted: • Downloaded internet images • Images copied from books &bull...

I need a specialist who can take one of our existing pieces of industrial machinery and retrofit it so it draws significantly less power while keeping—or ideally improving—its current output. The core objective is clear: increase overall efficiency by cutting energy consumption. Your task starts with a thorough assessment of the present drive systems, motors, control panels, sensors, and power-management components. From there we will agree on the most practical upgrade route, whether that means installing high-efficiency motors and variable-frequency drives, redesigning control logic with PLCs, or incorporating real-time energy-monitoring hardware and software. Key deliverables • Diagnostic report outlining baseline energy use, points of loss, and recommended retr...

I need a seasoned designer who can work fluidly in EasyPV, OpenSolar, and PV*Sol. The job is straightforward yet detailed: create the full system layout, calculate an accurate energy-production estimate, and recommend the most suitable equipment. There could be up to 50 designs required per week. You’ll start from site photos, satellite imagery, and my roof measurements. Please confirm shading, optimize array placement, handle string sizing, and document protection devices. Then export everything so the installer and homeowner can read it at a glance. Deliverables • Optimized layout files in EasyPV, OpenSolar, and PV*Sol • Annual and monthly generation reports with clear assumptions • Bill of materials and datasheets for the selected panels, inverters, racking,...

I need someone based in India who has a laboratory or access to one who can perform the esterification of citric acid to produce approximately 1 kg of trimethyl citrate. Key Details: - Strictly follow the correct procedure for esterification. - No extensive purity or costly tests needed; if done correctly, the product should meet requirements. - A simple burn test can be performed for validation: - The final product should burn without odor or visible fumes. - It should produce a bluish or pale blue flame when burned, with no yellow coloration. Additional Notes: Industrial/technical-grade purity is sufficient for my needs as long as these criteria are met. Please ensure proper packaging to ship the yield safely. I prefer an expert based in India to avoid international shipping ...

I’m building a compact, 4–6-layer mixed-signal board that will sit at the heart of a new sensor-interface product. The board must collect analog data, run it through an on-board DSP, and then push results out over Wi-Fi, Bluetooth, and a cellular link. To keep the unit fully portable, all power must be managed through an integrated battery management system, including charging, protection, and efficient rail generation for the analog, digital, and RF domains. Here’s what I need from you, start to finish: • Complete schematic capture with full part selection, paying special attention to RF front-ends, low-noise sensor inputs, the DSP section, and the battery management circuitry. • A 4–6 layer stack-up that cleanly separates noisy digital, sensitive ana...

I'm seeking an experienced electronics prototyper to create a functional demo of a wearable ultrasound device. Key Requirements: - Design and build a prototype of a wearable ultrasound device - Ensure the prototype is functional and suitable for demonstration purposes Ideal Skills and Experience: - Expertise in wearable device technology - Strong background in ultrasound technology and electronics - Proficiency in prototyping and functional demo creation - Experience with embedded systems and IoT is a plus Please provide examples of previous related work and a rough timeline for completion.

The rooftop array in my Decatur, TX home feeds a NeoVolta package (inverter plus battery storage), yet my monthly bill shows no meaningful drop in grid consumption. An earlier visit from another electrician ended without actionable findings, so the core issues remain unsolved. Your assignment begins with a thorough onsite diagnostic focused on the inverter and battery storage—the two components that have shown the most trouble. The panels themselves appear healthy, but confirm that as part of the investigation. I need a clear written assessment that identifies every defect, outlines why the system fails to offset usage, and details the parts, labor, or firmware updates required. Installed system already involves 71 solar panels, 16 NeoVolta batteries, and 4 NeoVolta inverters. Once...

I’m bringing a brand-new electronic charger to market and need an engineer who can turn my concept into a fully working prototype. The focus of this engagement is the complete design and prototyping phase—circuit architecture, component selection, enclosure layout, PCB, and initial functional build. Compact size is the single most important design driver, so every decision—from transformer topology to enclosure wall thickness—has to work toward a slimmer footprint without compromising safety or performance. I’m open to creative approaches such as GaN or other high-efficiency solutions if they help us meet that goal. To move forward, please send a detailed project proposal that outlines: • Your approach to achieving a space-saving form factor • Mi...

I'm seeking an experienced IoT mechanical engineer to design and assemble a demo product in the plug-in solar energy space. Key Requirements: - Design accessory for plug-in solar energy product. - Mechanical assembly of the designed product. Ideal Skills & Experience: - Expertise in IoT product development. - Strong background in mechanical engineering. - Experience with Uk ELECTRICAL STANDARD Please provide a portfolio showcasing relevant projects. Looking forward to your bids!

I want a small, low-noise pre-amplifier built around the NE5532, powered from + - 15v. The board will slot straight into my DIY projects, so please place the op-amp in an 8-pin DIP socket for easy swapping and surround it with proper rail filtering and local decoupling: • bulk filter capacitors on each rail (before and after any regulators you choose) • 100 nF ceramics tight to every NE5532 supply pin I need two input connection styles on the same PCB—standard RCA jacks plus snap-on terminals—so the preamp can drop into other snap-on equipped modules without adapters. Output may remain RCA only. Deliverables • Complete schematic in your preferred CAD package (KiCad, Eagle, or Altium are all fine) • Clean PCB layout and production-ready Gerbers with ...

need a straightforward 2-bit counter designed entirely with discrete Bipolar Junction Transistor (BJT) logic. My priority is to keep the component count as low as practical while still delivering clean, glitch-free counting through the four binary states (00-01-10-11). • Use only BJTs – no FETs, ICs, or microcontrollers • Favor the fewest possible transistors and passives without compromising function • Standard 5 V logic levels are ideal, though I’m open to 3.3 V if that helps reduce parts Ultimately, the most important thing is that the design works practically on the breadboard—without issues and without noise.

We are Unikeyic, a global electronic components distributor, and we are looking for experienced technical writers for a long-term collaboration. If you have a background in electronics engineering and enjoy writing high-quality technical content, we'd love to hear from you. What You'll Do You will write original technical articles related to electronic components and circuit design, including topics such as: Semiconductor devices Passive components PCB design Embedded systems Power management Electronic component selection Industrial automation IoT applications Electronic engineering tutorials The article title, outline, target keywords, and writing requirements will all be provided by us. Requirements To be considered, please make sure you meet most of the following require...

I need design for the fabric backlit board size is 68 height and widht 88 for the reference I uploaded the image i need some changes in that

I have a consumer-electronics board that combines both surface-mount and through-hole parts and now needs full turnkey assembly. I will supply the BOM, centroid/PnP file, and all component datasheets. What I need from you is the complete build—sourcing any missing passives, mounting every device, soldering, cleaning, and functional testing—so the boards arrive production-ready. Key points you should know: • Component mix is roughly 80 % SMD (0402–QFN) and 20 % through-hole, so the job will require automated pick-and-place with reflow plus a secondary wave or selective-solder pass. • different Board size, two layer FR-4, lead-free finish. Typical run will be 50 prototypes, scaling to 1 000 if the initial batch passes. • I expect optical inspection (AO...

Pls contact only if you have the experience and can provide some samples from your previous DAS project. Responsibilities Design and simulate Indoor Distributed Antenna Systems (DAS) using iBwave Design. Perform RF planning and coverage analysis for LTE, 5G, and, if required, GSM/UMTS networks. Develop complete iBwave project files (.ibw) for commercial and public buildings (airports, office buildings, shopping malls, hospitals, hotels, etc.). Select and optimize DAS components, including RRUs, antennas, splitters, couplers, combiners, feeders, and passive RF equipment. Generate RF coverage prediction maps (RSRP, SINR, RSSI) and ensure coverage meets customer requirements. Prepare Bill of Materials (BOM), RF link budget calculations, and technical documentation. Optimize existing DAS des...

I am looking for virtual assistant who English level is over B2. It will be long term relationship, and payment will be fixed or monthly pay. This role is to assist my business sometimes. I will share details on interview. Electrical engineering knowledge is preferred but not required. This is a part-time role with a focus on improving communication skills.

I'm seeking an experienced RF circuit designer to develop an RF amplifier. The amplifier should operate in the high-frequency range of 3 GHz to 30 GHz, with a medium output power level between 1W and 10W. Ideal Skills and Experience: - Expertise in RF circuit design - Proficiency in working with high-frequency components - Experience with medium power RF amplifiers - Knowledge of stability and linearity in RF circuits - Familiarity with simulation tools (e.g., ADS, HFSS) Please provide relevant work samples and a brief project plan.

I need a comprehensive pre-purchase survey for a motorboat between 20 to 40 feet. Key requirements: - Inspect the hull, engine, and all mechanical systems - Check electrical systems, plumbing, and safety equipment - Evaluate the condition of the interior and exterior - Provide a detailed report with findings and recommendations Ideal skills and experience: - Certified marine surveyor - Extensive knowledge of motorboats - Experience with boats in the 20 to 40-foot range - Strong attention to detail and report writing skills

I’m developing a signal-processing module and need a purpose-built power inverter circuit to drive it reliably from a 12 V DC source. The job centres on circuit design; PCB work can follow later once the schematic is locked down. Here’s what I’m looking for: • A complete schematic for a high-efficiency DC-to-AC inverter that delivers clean, low-ripple rails suitable for sensitive analogue and mixed-signal stages. • Component selection with readily available parts and clear justification for each choice. • SPICE-level simulations (LTspice, PSpice or similar) showing expected efficiency, output wave-form quality and thermal performance under 25 W continuous load. • A brief design report summarising calculations, key assumptions and any trade-offs ...

I have a Fuji MICREX-SX system built around the NA0P32-C PLC and fitted with an NA0LA-RS5 two-channel RS-485 card. My immediate need is to get the communications side working for data collection, not complex process control. Channel 1 must act as the Modbus-RTU master, polling two existing slave instruments and bringing their values into the PLC. Channel 2 must behave as a Modbus-RTU slave so that a SCADA/HMI station can read mapped holding registers from the PLC. I already wrote most of the ladder code in SX-Programmer, but I would like you to review it, adjust register mapping if something is off, and handle all parameterisation of the RS-485 card. Once the settings are in place, I’ll open a remote session (AnyDesk or TeamViewer) during on-site commissioning so you can verify...