Hire the Best PSPICE Specialists

I’m a Licensed Civil Engineer specializing in Construction Estimating and Quantity Surveying for residential, commercial, and mixed-use projects. I help clients control costs, prepare accurate budgets, and make informed decisions from pre-construction to execution. Whether you need detailed quantity take-offs, BOQs, or cost estimates, I deliver clear, reliable results you can confidently build from. • Experienced in detailed quantity take-offs and cost estimates using PlanSwift, Bluebeam, Excel, and AutoCAD • Strong background in BOQs, material take-offs, cost analysis, and scope review • Experience coordinating with project managers, designers, and contractors, including remote and international teams • Quality-driven approach with attention to constructability, accuracy, and deadlines • Clear and professional communication is important to me—let’s work efficiently and transparently

Luka Knežević – Hardware Engineer & PCB Designer I am a highly experienced Hardware Developer and PCB Designer with over 5 years of professional engineering experience and more than 50 successfully completed projects ranging from low-power embedded systems to multi-kilowatt power electronics. My background spans high-performance LED drivers, motor control, energy systems, wearable devices, medical devices, NFC solutions, industrial controllers, and advanced multi-layer PCB design. I have deep experience in designing reliable, production-ready hardware using modern MCUs (ESP32, STM32, PIC, TI, C2000, Spartan 7 (AMD)), high-power topologies, battery systems, and a wide range of communication protocols. My lab is fully equipped for prototyping, testing, and validation, including oscilloscope work, precision measurements, firmware bring-up, and full board bring-up. ________________________________________ Professional Background • 5+ years of hardware engineering experience • 50+ completed projects, including: o Buck, boost, flyback, and PFC buck converters o BMS systems (1–16 cells) o E-bike inverter, motor control boards, motor drivers o E-bike chargers and high-efficiency power supplies o Nanosatellite power supply modules o Wearable devices (ultra low power + haptics + sensors) o Medical devices (Class A/B prototyping) o Industrial control cards (TI, ESP32, STM32, C2000, Spartan 7 (AMD)) o Wireless systems (BLE, Wi-Fi, LoRa, NFC) o Toys and consumer electronics o Rigid and rigid flex PCBs (2–16 layers) o Screen sterilization system controllers I have designed boards ranging from 1 to 16 layers, including rigid flex adapters, ultra compact wearable PCBs, motor control boards, high voltage/current power stages (up to 3 kW), and RF capable layouts. ________________________________________ Technical Expertise Hardware & Power Electronics • Topology selection: buck, boost, flyback, SEPIC, PFC buck, forward, synchronous drivers • Wide range power design up to 3 kW, switching frequencies up to 200 kHz • Battery systems: BMS, balancing, charging, MOSFET drivers • Motor control drivers (BLDC, brushed DC, E bike) PCB Design • Professional PCB layout using: o Altium Designer (primary) o KiCad, OrCAD, PCAD, EasyEDA • High density, mixed signal, high current, HV, and EMC safe design • Rigid flex, flex adapters, microcontroller modules, RF layouts • Full DFM/DFT optimization for production Communication Protocols • CAN, I²C, SPI, UART, RS485 • Bluetooth, Wi Fi, BLE Mesh, ESP NOW, LoRa • Ethernet LWIP, NFC, custom short-range communication Software & Simulation • MATLAB, Simulink, PSpice • LTspice, TINA, Altium simulations • Firmware bring up (ESP-IDF, STM32 HAL, Arduino) Prototyping & Testing • Soldering, rework, fault analysis • Gate driver tuning, feedback loop stabilization • Load testing, thermal evaluation, EMC preparation ________________________________________ Achievements • 1st Place – IFEC 2019 (E-bike drive) • 2nd Place – IFEC 2020 (Nanosatellite power supply) — Team Leader & Hardware Lead • Former CTO of a hardware startup (2 years) • Project Manager for solar power plant automation (1 year) • Over 50 projects and 1300+ billable hours on Upwork ________________________________________ Notable Project Types • Screen sterilization controllers (UV / chemical) • Wearable devices (IMU + LRA haptics + battery optimization) • Medical device prototyping • Power supplies (industrial, consumer, nanosatellite grade) • Custom rigid flex boards & adapters • NFC-triggered activation devices • Motor control & drive boards ________________________________________ Let’s Work Together Best regards, Luka Knežević

Being an expert on project design and management, data analytics, and implementing research tools, I enjoy searching for a sustainable solution to any complexity in my favorable fields. I am quite an expert in MATLAB Simulink-based projects and simulation on Electrical and Electronic based projects. I possess the quality to communicate, capable of understanding what is needed, and the leadership skills. Meeting deadlines and ensuring client satisfaction are my top priorities. My Service includes: 1. Integration of power systems 2. Control system 3. Grid Integrations 4. Microgrid design 5. Storage system design 6. Electric Vehicle 7. Converter and Inverter design 8. Fault Analysis 9. Load Flow Analysis 10. AutoCAD Design 11. All types of Electrical Engineering Projects of any level. Feel free to inbox me anytime.

Thank you for taking the time to view my profile. I'm a professional electrical engineer with experience in power electronics, digital circuits, analog circuits, and HF RF circuits. My favorite EDA tools are OrCAD or KiCad for schematics capture, Allegro or KiCad for PCB layout, LTspice for analog circuit simulation, Verilog/SystemVerilog/Vivado/ModelSim/Questa for digital and FPGA design, SIMetrix/SIMPLIS for SMPS design, dsPIC33/MPLAB/PowerSmart for digital power design. Still, I have used many other EDA tools under customer/client requests in the past, such as Pspice, TINA-TI, ADS, Quartus Prime, etc. I'm also a professional programmer with experience in PC BIOS, BSP, Linux, and Android, and I'm familiar with many programming languages such as x86 assembly, ARM assembly, C, C++, Java, Python, HTML, CSS, XML, SQL, JavaScript, Unix shell script. I have many mass production designs for domestic clients and some from foreign countries. If you want reference to some of my product designs, I can ask for the client's permission as they are mostly NDA secured. I'm serious about the intellectual properties of others. But you can view my portfolio for a LF N2PK VNA and a Red Pitaya STEMlab125 designs, both are the few best in class amateur measurement equipment with professional device quality, I improved on their original design to better fit my daily electrical test requirements, and as I just produce my own improved design for my private use, so it's legal for me to show them here without IP issues with the copyright holders. My current interest and most recent skills are FPGA, SMPS, digital power, motor control, and automotive electronics.

From concept to tested prototype, I design high-performance PCBs and embedded systems for startups, engineers, and product teams who need results that work the first time. With 8 years of experience in embedded systems and hardware design, I specialize in creating production-ready electronics that are efficient, reliable, and built for scale. Whether you're developing a new product or improving an existing design, I bring the technical expertise and problem-solving mindset to get it done right the first time. 💡 What I Offer: 🔹 Embedded System Development: ARM Cortex, STM32, ESP32 🔹 Advanced PCB Design: From 2-layer to complex multilayer boards with BGA, RF, and high-speed signals 🔹 Cost-Effective Engineering: Focused on value without compromising quality 🔹 Rapid Prototyping: Helping you move from idea to working prototype quickly 🔧 Core Technical Skills: ✔️ Analog & Power Circuit Design: LED drivers, SMPS, sensor interfacing ✔️ Motor Control & Drive Systems ✔️ Signal Integrity & EMC/EMI-Conscious Design ✔️ Communication Protocols: RS232, RS485, I2C, SPI, UART, CAN ✔️ Firmware Development: Embedded C/C++ for real-time applications 🛠️ Tools & Platforms I Work With: 👉 Altium Designer – Industry-standard PCB design 👉 LTspice – Analog simulation & validation 👉 Proteus – Embedded system simulation 👉 Signal integrity tools and EMI/EMC testing preparation 🚀 Why Work With Me? ✨ Proven record of delivering on time and exceeding expectations ✨ Strong communicator who makes complex things simple ✨ Practical experience with certification-ready hardware ✨ Affordable, efficient, and results-oriented 🎯 Let’s Build Something That Works Whether you're launching a new product, troubleshooting a design, or scaling to production, I’m ready to help bring your vision to life with solid engineering and dependable execution. 👉 Check out my work: github.com/zainsiddiqui-zz 📩 Let’s connect and build your next success.

I am a Power System Engineer specializing in grid studies, relay protection, and dynamic simulation for transmission, distribution, solar, wind, BESS, and industrial power systems. I help utilities, EPCs, developers, and consultants prepare accurate system models, protection settings, simulation results, and submission-ready technical reports using DIgSILENT PowerFactory, ETAP, PSCAD/EMTDC, and PSS®E. Core services: • Load flow and voltage profile studies • Short-circuit studies according to IEC 60909 / ANSI • N-1 / N-2 contingency analysis • Reactive Power Capability Study • Grid Code Compliance Study • Electrical equipment selection based on power system study results • Protection coordination and relay settings • Arc flash hazard analysis according to IEEE 1584 • Grid Impact Assessment and interconnection studies • Renewable integration studies for solar PV, wind, and BESS • Harmonic and resonance studies • EMT studies: transformer energization, switching transients, lightning, LVRT/HVRT • MOD / PRC / Grid Code compliance Software: • DIgSILENT PowerFactory • ETAP • PSCAD / EMTDC • PSS®E Typical deliverables: • Technical report in PDF / Word format • Simulation model files when required • Short-circuit and load-flow result tables • Protection settings and TCC curves • Arc flash incident energy tables and label data • Compliance summary and recommendations • Excel calculation sheets Relevant experience includes: • PRC-023 / PRC-025 relay setting compliance reviews • MOD-025 / MOD-026 / MOD-027 support for renewable and generation projects • Arc flash studies for MV and LV systems • PSCAD EMT and DIgSILENT RMS/EMT studies for solar, wind, and BESS projects • Harmonic, resonance, switching transient, and insulation coordination studies My focus is to provide clear engineering results, practical recommendations, and reports that can be reviewed by utilities, owners, EPCs, lenders, and technical consultants.