Simplified Cost-Efficient Inverter PCB of 100watt
Budget: ₹1,500 – ₹12,500 INR
I have an existing inverter 100 Watt PCB with automatic change-over that has grown far too complex. My goal is to strip it down to the bare essentials so it can be produced and assembled for less than ₹400 per unit without sacrificing its core purpose.
Core brief
• Primary function: inverter with automatic changeover
• Changeover method: relay-based (no thyristors or solid-state relays)
• Mandatory built-in charging circuit
• Finished board must fit inside 90 mm × 110 mm footprint, height unconstrained
What has to go: all the extra protection stages, daughter boards and over-engineered modules currently inflating cost and layer count. I only want the circuitry strictly required for reliable change-over, inverter operation and safe battery charging.
Deliverables I need from you
1. Clean, up-to-date schematic reflecting the simplified design
2. Optimised PCB layout that meets the size limit and is ready for mass production
3. Gerber, drill and pick-and-place files suitable for any standard PCB house
4. Cost-efficient BOM, complete with supplier part numbers and per-piece pricing that proves the target cost can be met in production runs
I will provide the present design files and a block diagram of the required functions once we start. Please keep manufacturability in mind—use widely available footprints, minimise layer count where possible, and favour through-hole components only when absolutely necessary. If you feel a small list of protective elements is essential for reliability, call it out explicitly; otherwise assume lean design principles.
I look forward to receiving a streamlined, production-ready package that hits the cost and size targets with no wasted parts.
Core brief
• Primary function: inverter with automatic changeover
• Changeover method: relay-based (no thyristors or solid-state relays)
• Mandatory built-in charging circuit
• Finished board must fit inside 90 mm × 110 mm footprint, height unconstrained
What has to go: all the extra protection stages, daughter boards and over-engineered modules currently inflating cost and layer count. I only want the circuitry strictly required for reliable change-over, inverter operation and safe battery charging.
Deliverables I need from you
1. Clean, up-to-date schematic reflecting the simplified design
2. Optimised PCB layout that meets the size limit and is ready for mass production
3. Gerber, drill and pick-and-place files suitable for any standard PCB house
4. Cost-efficient BOM, complete with supplier part numbers and per-piece pricing that proves the target cost can be met in production runs
I will provide the present design files and a block diagram of the required functions once we start. Please keep manufacturability in mind—use widely available footprints, minimise layer count where possible, and favour through-hole components only when absolutely necessary. If you feel a small list of protective elements is essential for reliability, call it out explicitly; otherwise assume lean design principles.
I look forward to receiving a streamlined, production-ready package that hits the cost and size targets with no wasted parts.