LUMINOUS EcoWatt Neo 12V 1050VA IPS Inverter Circuit

Luminous EcoWatt Neo 12V 1050VA IPS, but I was able to gather a lot of technical details and what is known about its internal design/features. If you like, I can try to sketch a block‑diagram based on available info. For now, here are its known electrical and circuit‑related parameters & functional blocks:

Known Specifications / Features

Expected / Inferred Circuit / Internal Blocks

Based on the above specs, and common inverter/IPS design practice, this unit likely consists of the following internal blocks:

1. AC Input / Mains Supply Stage
   • Mains input filter & surge protection
   • Voltage sense circuit: to monitor mains voltage to decide when to switch to inverter or battery/charging mode
2. Battery & Charging Circuit
   • Battery charger: likely a multi‑stage charger (bulk / absorption / float) because of “3‑stage charging” in some models. powersavebd.com+1
   • Current limiting & overcharge cutoff
   • Low voltage cut-off (to protect battery)
3. Inverter Stage
   • DC‑DC conversion: from 12V battery to higher DC (or through an intermediate stage)
   • Transformer (or transformerless design) raising DC to AC high voltage (≈230V)
   • Oscillator / switching transistors (MOSFETs or IGBTs), to generate square or modified waveform as per design
4. Control / Logic
   • Microprocessor or microcontroller (an “advanced microprocessor design” is mentioned) to manage switching, mode selection (Eco/UPS), battery charging logic, protection features. techxzon.com+1
   • Possibly LEDs or status LEDs + alarms for overload, low battery etc
5. Output Stage & Filtering
   • For square wave or modified wave, filtering is minimal; may have some LC filters to suppress high switching noise
   • Overload detection & protection (circuit to shut down or limit output if load too large)
6. Thermal Management
   • Heat sinks for switching devices, battery charging MOSFETs etc
   • Likely a fan or vents; sensors for over temperature shutdown
7. Switch‑Over / Bypass / UPS Mode
   • Detection of mains failure (voltage drop or interruption) → fast switch to battery/inverter output (~<20ms)
   • When mains returns, re‑charge battery, and switch input back to mains powering + charging mode

What Is Not Known / Unclear

• Exact circuit schematic: transistor types, transformer specs, capacitor sizes etc.
• Whether there is an output transformer (for isolation) or if it’s non‑isolated.
• The exact harmonic distortion, efficiency under different loads.
• The component layout, PCB design.