Inverter Bus Voltage Feedback Circuit Design for PWM SG3525 &LM358

@chetanc20

I can design a clear, production-ready circuit to close the DC bus voltage feedback loop for your 12–24V off-grid inverter. I’ll provide a precise sensing path with properly scaled divider, filtering, and optional isolation to ensure accurate, noise-immune. Deliverables: • Complete schematic (KiCad/Altium) • Calculated divider + signal conditioning design • Short, sourcing-ready BOM • Brief design notes (accuracy, ADC scaling, safety) Note : 1. I don't have experience in Firmware programing 2. This bid price is not included component procurement and PCB fabrication and Assembly

@writerstech001

Hello, I have carefully reviewed your project requirements and I am confident that I can deliver a high-quality solution tailored to your needs. With strong expertise in electronics design, embedded systems, and PCB development, I provide complete support from concept to working prototype. I have hands-on experience in: Designing efficient and reliable electronic circuits Developing custom PCB layouts (single-layer, multilayer, compact designs) Working with microcontrollers and embedded systems Power management (voltage regulators, motor drivers, etc.) Creating functional prototypes ready for testing and production

@mandalsurajkumar

Hello there, It's my pleasure to write to you that I will provide you ready to build schematic for your project that closes the voltage feedback loop on DC bus of a offgrid-inverter.I am an electrical engineer experienced in PCB design and Embedded Software Developement. Along with this I will provide you a short BOM and document explaining the calculation of divider ratio, ADC reference choice etc. Kindly initiate the chat and let me help you complete your project. Thank You

@AbdulSammiKhan

Hey There! Hope you are doing well. It is a great project and I can easily do this project for you. I am certified in KiCad, and I can also use Altium for the designing. I have done a PCB fabrication internship where I got to learn about the practical problems during the PCB development.

@jb095

Hello, I can design a complete, ready-to-build voltage feedback circuit for your 12 V–24 V DC bus inverter system. I have strong experience in PCB design and practical analog signal conditioning, ensuring clean and reliable ADC measurements. I will provide: -A fully documented schematic (KiCad or Altium) including voltage divider, filtering, and optional isolation -Properly calculated component values to safely scale the bus voltage to the MCU ADC range -A practical BOM with readily available components -Clear design notes covering accuracy, noise filtering, and protection strategy -(Optional) a simple MCU ADC read example to speed up your firmware work My approach focuses on robust, low-noise measurement and real-world manufacturability, ensuring stable operation across both 12 V and 24 V conditions. I’d be glad to support your project—please let me know your preferred MCU and ADC reference voltage if available.

@prashants094

Hi, I’d love to work on this project. I have prior experience designing voltage sensing and feedback circuits for embedded systems, including DC bus monitoring using resistor dividers, filtering stages, and ADC interfacing with microcontrollers. I’ve previously built similar schematics for power electronics applications, so I’m confident I can deliver a clean, accurate, and ready-to-build design for your inverter system. For your requirements, I can provide: -A complete schematic (Altium) with properly scaled voltage sensing for both 12 V and 24 V ranges -Carefully calculated resistor dividers, filtering, and optional isolation for noise immunity and ADC protection -A practical BOM with readily available components -Clear design notes explaining calculations, ADC reference selection, and safety considerations As I’m a new freelancer, I’m happy to accept payment only after you’re fully satisfied with the work. I’d also really like to discuss your exact requirements in more detail (microcontroller choice, ADC specs, protection thresholds, etc.) before starting, so I can tailor the design perfectly to your needs. Looking forward to working with you. Best regards, Prashant

@akshayrukade01

Hi, ​I can design this DC bus voltage feedback loop for your off-grid inverter and deliver a fully documented KiCad schematic. For a 12V–24V bus, noise immunity is the biggest hurdle. High-frequency switching noise will wreck ADC readings and trigger false faults if filtering isn't handled correctly at the hardware level. ​Here is my plan for your circuit: ​Sensing & Filtering: I will design a precision resistor divider scaled for your MCU's ADC, plus an active op-amp buffer and RC low-pass filter to reject switching transients. ​BOM: Practical, in-stock parts from Mouser/DigiKey, prioritizing low-tolerance resistors and stable op-amps. ​Docs: Brief notes covering divider math, impedance matching, and filter cutoff choice. ​Firmware Bonus: A clean C code snippet for reading the ADC and implementing a software moving-average filter. ​I'll be upfront: I am an Electronic Systems engineering student at IIT Madras. I have extensive hardware experience but am new to this platform and looking to earn my first 5-star review (therefore bided so low). You will get rigorous engineering and my absolute full attention. ​Let me know if your MCU shares a common ground with the DC bus, and we can get started immediately.