Inverter Bus Voltage Feedback Circuit Design for PWM SG3525 &LM358
Budget: ₹600 – ₹1,500 INR
I need a clear, ready-to-build circuit diagram that closes the voltage feedback loop on the DC bus of an off-grid inverter running in the 12 V – 24 V range.
The diagram must show how a suitable voltage sensor feeds a microcontroller so the firmware can keep the bus voltage within safe limits and trigger protective actions when it strays. Please size all resistive dividers, isolation devices (if required), and any signal-conditioning stages so the microcontroller’s ADC receives a clean, scalable signal.
What I expect from you
• Complete schematic, preferably drawn in KiCad or Altium, showing the microcontroller, voltage sensor path, power supply rails, and any filtering or isolation you recommend.
• Short bill of materials with part numbers that are actually available.
• Brief design notes explaining calculation of divider ratios, ADC reference choice, and how the circuit meets accuracy and safety goals at both 12 V and 24 V.
If you have an existing microcontroller code snippet that demonstrates the voltage read-back, feel free to include it—it will speed up my prototyping, though firmware is optional for this engagement.
Accuracy, noise immunity, and component practicality are the key acceptance criteria. Let me know if you need any clarifications before you start.
The diagram must show how a suitable voltage sensor feeds a microcontroller so the firmware can keep the bus voltage within safe limits and trigger protective actions when it strays. Please size all resistive dividers, isolation devices (if required), and any signal-conditioning stages so the microcontroller’s ADC receives a clean, scalable signal.
What I expect from you
• Complete schematic, preferably drawn in KiCad or Altium, showing the microcontroller, voltage sensor path, power supply rails, and any filtering or isolation you recommend.
• Short bill of materials with part numbers that are actually available.
• Brief design notes explaining calculation of divider ratios, ADC reference choice, and how the circuit meets accuracy and safety goals at both 12 V and 24 V.
If you have an existing microcontroller code snippet that demonstrates the voltage read-back, feel free to include it—it will speed up my prototyping, though firmware is optional for this engagement.
Accuracy, noise immunity, and component practicality are the key acceptance criteria. Let me know if you need any clarifications before you start.
Related categories:
Electronics
Microcontroller
Electrical Engineering
PCB Layout
Circuit Design
Embedded Systems
Prototyping