Power & protection

• DC-DC converters (buck/boost) in the 5–100 W range (project-dependent)
• Battery charging and protection circuits, reverse polarity protection
• Basic EMI filtering and surge protection for field or automotive use

Sensor & analog front-end

• Circuits for light, temperature, pressure, and current sensors
• Op-amp stages, filters, level shifting, ADC front-end design
• Input protection against overvoltage, ESD, and transients

Motor / LED / actuator control

• High-brightness LED and RGB drivers, automotive lighting front-ends
• DC, stepper, or BLDC control (signal-level design)
• Relay, solenoid, and general actuator driver circuits

Communication interface

• RS485, RS232, CAN, LIN transceiver interfaces
• ESD protection for communication ports
• Proper termination and biasing for real-world cabling

1. Start from requirements: describe your goals and constraints.
2. Gather environmental info (voltages, temperatures, loads, cabling, etc.).
3. I suggest a suitable topology and key IC/device options.
4. Design the full schematic with parts that are realistically purchasable.
5. Share the schematic with you for review and refinements.