SPLIT Electricity Meter Hardware

• Overview

Main hardware platform for a split-type electricity-metering device. The project combines mains power conversion, digital control, memory, communication and interface circuitry on a large two-sided PCB with strong mechanical and production constraints.

• My contribution

I performed a detailed review and refactoring of the existing schematic and designed the PCB from scratch. The schematic work ranged from small corrections, such as changing resistor values in memory-device support circuitry, to a complete redesign of larger functional blocks, including the emergency-power subsystem. I then created the board outline, component placement, routing, 3D model integration and manufacturing outputs.

• Engineering highlights

The PCB contains both high-voltage/power circuitry and dense low-voltage digital electronics. The layout required functional zoning, careful power routing, mechanical coordination with the enclosure, positioning of large THT components, and dense routing around the MCU and peripheral circuitry. The design also had to remain suitable for practical assembly and service.

• Result

At the time I left the company, the hardware design was complete; only final drawing documentation remained to be finished.

• Tools / technologies

Altium Designer, mixed-signal PCB design, mains electronics, SMPS, embedded hardware, memory interfaces, emergency power, DFM, production documentation.